• fAdding and Subtracting Polynomials
Add or subtract.
1. (4ã5—2a3)+(2a3—7a÷3) 2.
(-4x5— 13x2 —14)
+(5x6+ 5x3+
3.
(-1ix +19x
+18)
+(-8x2— i4x— 11) 4. (13x5÷ 12x4— 12x3)
+(12x6+ 20x4÷ 16x)
5. (-15x2—5x
+10)
+(16x2÷ 4x— 11)
+(-19x2+ 19x—20) 6. (17x2÷ 18x
+4)—(10x2÷ 15x
+6)
7. (15x2+ lix
+10)— (-14x2+ 7x —4)
8. (-13x6÷ i8x5+ 7x4+ i4x2 —8x)
—(-14x7+ i9x2— ii) 9. (4x2+ Sx
+8)—(12x2+ 19x
+13)
10. Subtract-20x4—6x3+ 17 from 15x7+ 12x5—8x
+3.
x—4)
—x—4 Add
(-Ox3 +4x2—2x÷ 7)+(7x2—. =-6x3+4x2—2x+7+7x2
= -6x +
11x2
—3x
+3
Subtract
(8y2
+4y3
+2y)
—(-4y2
+3y4
=8y2+4y3+2y+4y2—3y4+
= -3y +
4y3
+12y2
+iCy
—
8y) 8y
7x2)
I;
1::
1;
p.
Properties of Exponents
1
ax
Algebra II Grades 6—8—RBPO83O
(aj” = ax . = a
(ab)X =
= a
(
ab’1
ax
(2x -s
‘3’ 3-3
33
23x3
27 8x3 Simplify. Write answers with
1.
positive exponents.
(x2)3 2. ( X
‘yI
3. a3• a5 4. w-s
5. (2b)4 6. b3
b5
7. (3d5)2 8. 2 -i
9. 1
m14 10. k3’
k5
Multiply or divide.
1. (-6x)(lOx + 6)
2. 4x2(10x3— 12x2— x + 8)
3. (-5x — 4)(-3x)
• ‘1
._-. 4 I
j$J.
4. -9x3(-6x2 + 10)
5. -x(9x2 + 3x — 5)
6. (4x1° ÷ 6x6 ÷ 8x3) ÷4x3
7. (-30x’2 — 35x9 + 45x2) ÷ lOx2
8. (8x° — 8x7— 48x4) ÷ 16x
9. (-18x12 + 27x1’ — 6x5+ 21x3) ÷ 9x3
10. (33x6—44x5+ 44x4-i- 99x3÷ 34x2) ÷ 11x3
-
©i3P 3r&%
Multiplying and Dividing Monomials
Multiply -3x2(-6x2÷ 2x — 11)
= (-3)(-6)x22 + (-3)(2)x21 + (-3)(-l 1 )x2
= 18x4 —6x3 + 33x2
Divide lOx1’ — 25x5+ lSx lOx’12 — 25_2 + 15x12
lOx2 10 10 10
x9 — x3 +
2 2
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—S -.
—
Multiplying Polynomials
Multiply.
1. (2x+7)(8x—7)
c—I
4. (10x— 12x3+ 4)(4x2 —4x÷2) (-7x2÷ 3x — 7)(-8x ÷ 10)
= (7x2)(8x) + (-7x2)V0) + (3x)(-8x) + (3x)(10) + (-7)(-8x) + (-7)(10)
.1
= 56x3 —70x2 — 24x2 ÷ 30x +
= 56x3 — 94x2 + 86x — 70
56x — 70
2. (-lOx4 — 7x2)(4x —4)
3. (-4x2—3x— 11)(12x—2)
1.;
5. (-12)(2x —6)6. (4x4 + 7x3)(-1 lx ÷ 4)
1’ I
7. (11x2—7x ÷ 8)(4x ÷ 7)8. (-10x2+ 12x + 9)(-10x2 — 5x — 10)
Aloebra II Grades 6—8—RBPOS3O
jvidi Polynomials
Divide.
(x—3) (2x3 + 7x2
2x+ 1)2x -(2x
1x2 2.
1.
3.
+ 7x2—x
+ 1x2)
— x — 4) ÷ (2x + 1) 2x + i) 2x3 +
—4
1 x2 ÷ 3x 7x2— x—4
6x2 —x
1x2÷3x
+ 1x2) 6x2— x
, -(6x2+3x) -4x—4
—2 2x+1)2x3+ 7x2—x—4
+ 1x2)
2 2x+1
6x2— x -(6x2 + 3x)
-4x—4
w -(-4x_—_2) -2
1. (-3x3 1 5x2 ÷ 108x) (x 4)
2. (-x3 — 8x2 — 16x) (x+ 4)
3. (4x3 + 7x2 14x + 6) (4x
4.
1)
(-2x3 42x2 — 21 6x) (x+
5.
12)
(-3x3 + 3x2 + 18x + 5)
www.summerbridgeadivities.co.rn
=—;•-
fcreatest Common Factor
1X0J8
5. 4d3—4ad+4a2
-i
9x3y5 — 1 5x2y3 — 1 2xy4 = 3xy3(3x2y2 — 5x — 4y)
Check: 3xy3(3x2y2) + 3xy3(-Sx) ÷ 3xy3(-4y) = 9x3y5 — 1 5x2y3 — 12xy4
I
H-t - -----
Factor. Check your answer.
1. 3a2+3a—6
2. 2y4÷14y3
3. 4b3—8b2÷16b /
4. 30e2 — 1 2ef + 6e2f2
6. 28w3x + 8w4x
7. 12r6 + 8r7 — 32r8 + 36r9
8. 1 Ocde + 2Ocef — 3Oceg
I
- 4Pr
Aicebra II Cradec 6—R—RRPORO
jactoriis
Factor. Check your answer.
1. x2—2x—63
2. x2 — lOx + 25
3. x2÷2x÷1
4. 2x2—5x—3
5. 8x2—6x—9
6. 3x2÷lOx—8
7. 12x2÷23x+lO
6x2 + 23x + 20
6x2—x— 12
Check:
= (2x — 3)(3x + 4)
(2x)(Sx) + (2x)(4) + (-3)(3x) + (-3)(4)
= 6x2 ÷ 8x — 9x 12
= 6x2 — x — 12
4;’
ii
4,.
r
I----
www.summerbridgeactivities.com-1. x3—5x2—36x
2. 3x2—24x—144
3. -4x3 + 64x2 — 256x,
4. 3x3 — 6x2 — 144x
5. x3—3x2—88x
6. -3x3 + 45x2 — 1 50x
7. 6x — 54x3 — 60x2
8. 2x5 — 46x4 + 264x3
15
Algebra II Grades 6—8—RBPOS3O
Factoring Trinomials
a
I
L
I
3x3 + 1 5x2 + 1 8x
= 3x(x2 + 5x ÷ 6)
= 3x(x + 2)(x + 3)
Factor.
8. 64— 125x3
10. 2y4—128y
j
Factoring Binomials
Ii
Difference of Squares
= (A+B)(A—B)
Difference of Cubes A3—B3
4x2—9y4
Sum of Cubes A3-i-B3
= (2x÷3y2)(2x—3y2)
= (A—B)(A2+AB÷B2) = (A+B)(A2—AB÷B2)
x3—8b6
= (x—2b2)(x2+2ab÷4b4) = (c3+d2)(c°—c3d2+d4)
Factor.
1. x2—121
3. 81y4—64x2y2
5. b3c6—1
2. 4x2—81
4. a3÷27
6. 27z3+1
7. 1 25c6 — 8d9
9.
wwwsumrnitbddgeattivities.com
1
[ jMuItipIying Rational ExPressionkL
3xy2 • 2z3 = 6xy2z3 =
4z
ö22
36x2z 6xx2+Sx+15 •4x_3..jx+3)(x÷5)(4xe3)(x+3)(x÷5) 8x2—lOx+3 x+7 (2x1)(4xei)(x+7) (2x—1)(x+7)
Reduce your answer to lowest terms.
1. 6x •]y..
y3z2 3x3
2. 8m5n • l5mp 5p2 24m2n4 -
3. 48f5 • 1 8f6 84f3 48f3
4. w÷3w+2
w2—4 w2—9
5. f2—81 f2—13f+40
f2÷8f—9 -7f4÷56f3
6. -8d3+ 16d • 3d2—3d -4d 15d3— 15d2
Algebra II Grades 6—8—RBPOB3O
Dividing Rational Expressions
5x3
6. x6
— 2x6 lOx + 20
20
-3x3 — 3x2
+ 2x + 1
4c2d 8cd2 = 4c2d • 15e — 6Oc2de = 3c 5e3 15e 5e3 8cd2 — 40cd2e3 2de2
y—2 5y2
y+7 = 5y2 by = 5y2 •y—2 = 5y3—10y2 = y(y—2)
lOy y÷7 y—2 y÷7 lay 10y2÷70y 2(y+7)
Divide. Reduce your answer to lowest terms.
1. Sx y3z2
2. 14m3n 3p2
3. 16y5 36y3
.7m 24p4
4.
‘Ii
4. x2—81
+ 7x —18
5. .4—5
1 Sf + 45 t +8f÷152
35
www.summerbridgeactivities.com
i
J..fngandSubtractig
p -A
Rational Expressions
* To add or subtract rational expressions, you must find the least common denominator.
Add or subtract. Simplify if possible.
1/
t7a 6a
3 12
2. 8h 3h
8 32
Algebra Ii Grades 6—8—RBPOS3O
I L
..±.7+2e TheLCD=10e3 .A2..i7+2e)
5e3 be 5e3 2 be
8 -7e2—2e3 -2e3—7e2÷8
be be be
3. 4 q
6 h
4. 4d—36d—6
8 24
5. -3d + 8 — 6d
6d — 6 1 8d2
6. 7d 5
6d 20
7. 5e÷4 Sf ÷ 5
3e 1 Of + 10
8. -5c + 2 9c+6
Sc ÷ 7 36c2 + 24c
_SoMng Equations with Rational Expressions
___ ___ ___
3 2y 5
y—2 4y y+2 y—2 -(y—2)(y+2) y+2 3(y÷2) + -2y = 5(y—2) (y—2)(y÷2) (y—2)(y÷2) (y+2)(y—2) 3(y÷2)—2y=5(y—2)
3y + 6— 2y = 5y— 10 y + 6 = 5y— 10
16 = 4.y y=4
Solve. Check your solution(s).
1. x 2÷3 2.
10 5 8 y y
3. a-2 2 4. 144
a—4 — a—4 2 9x — 9 6x
I
5. x x x+3 6. 5 1 2
= = 2 +
x÷2 x—4 x+2 c÷3 4c —36 c—3
Jc I..
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Simplify.
1. j4g4d3 2.4fT
‘416
3. J49bek 4.
Wi
5. -
RJi
000f3k5d8c117. -1J81m1j
6. ,j2OOkh1
8 41/625e4
‘41296
10. SJ8(y—2)6
Simplifying Radicals
34f( -64
‘4’ 125
I
J48a3bc
—
_____
— ;j5.5.5 -4
5
= 4J2.2.2.2.3’a3’b4.b.’c
= 2bJ3a3bc
. a/-27f
‘I 8f6
Algebra II Grades 6—8—RBPO83O
_________________________
___________________________
--:--:
E--i
—--— F—-- ------ C--- to
p
I 51 ‘-<I +
.3 V +
to >‘: + to -J + It x
-1, -L 03 —03 -LI
-L ml (A)
C’) + -L .L1
& 01 to 63 -osi + (A) —‘(4) 0I
u:
I
+++i.a_ toM + IGD oil
rJ + —ii 01 0)
—0)
V.’ C C I-f - 0) n I-f 0)
2:
n VICD x>< + GD x
+ . to x —‘4L
—-—
________________ [1 91-J -L + Cr’
‘1, 3 0 -I, IIIIII +o
al NJ
%— c”I .Cl 0)-r’jI ‘<ICDI —ilcal ‘<I + N)’ —I
z I
‘<
o
ha.>< I (SI•C” 0•i0) -L 0 •< Ga 9,
II
0)
a n
0) Li) II +x I
+
II N)
x
a)
+x
‘C . -t 01 >< ‘CaN) +CA) -)N) -L
N)
ii ii
+CD, C . N) E•.
- :v-T’tt:TT’.::r’” 13C a (D
a
D a U, B 0 -h
I
U)II4 41
9) xxVI I’) C,)
0)
F’) 0 C?) IL H-i -L C.) C.)
Solving Equations with Radicals
Solve. Check your solution.
I
I
I
1.
3. g2x—3=4
5.
7. J3x÷1=-q2x+6
2.
4. -?J7=-2
6. J2y÷1+5=O
8. 3+-Jy—6=
©
U1W
3 5
2
()3
Check:
(2)
3
2x
+3qi
?8
5 3
x=4
+ 2
3 +2=5w’
I
Algebra II Grades 6—8—R8P0830
rational exponents.
Jationafponents
RJ=
alm andV?
= am/n/4 2r
= (2a)3 )5f2 = (7S)5/2 2r
N
= a’12
=
b1”4
— a116
Simplify. Rewrite with positive,
1. 2. qxy2z3
3. (3a -3f5
‘4b’ 4.
/
5. 21/4 • 22’5 6. xl” x3/7
7 . p5/4 8.
9. c415 d5’9
cThO d1”6 10.
Sj bJxy
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Jnser Pages
Page 10 1. -60x2—36x 2. 40x3 —48x4 — 4x3 3. 15x2 ÷ 12x 4. 54x5— 90x3
3 2
5.-9x —3x ÷5x
6. + + 2
10 7 7 9
7.-Sx —--x +- 8. x9— — 3x3 9. -2x9 + 3x° — +
+
3 2 34
10.3x —4x +4x÷9+—
lix Page 11
1. 16x2+ 42x—49
5 4 3 2
2.-40x +40x —28x ÷28x 3. -48x3— 28x2— 126x + 22 4. 40x6— 88x5+ 68x4—24x3+
5. -24x+72 6.
7.
8.
Page 12
1. -3x2—27x 2. -x2—4x
3.x2÷2x—3÷ 3 4x — 1 4. -2x —i8x2
3. 4b(b2— 2b + 4) 4. 6e(5e — 2f + e12) 5. 4(d3— ad + 22) 6. 4w3x(7 + 2w) 7.4r6(3 + 2r—8r2+
1. x(x—9)(x + 4) 3. -4x(x — 8)(x — 8) 5. x(x + 8)(x — ii) 7. 6x2(x — lO)(x + 1) Page 16
1. (x— ii)(x + 11) 2. (2x —9)(2x + 9)
2 2
3. (9y — 8xy)(9y + Sxy) 4. (a + 3)(a2— 3a + 9) 5. (bc2— i)(b2c’ + bc2 + 1) 6. (Sz + 1 )(9z2 —3z + 1) 7. (5c2 — 2d3)(25c4 + 1 0c2d3 8. (4— 5x)(l 6 + 20x + 25x2) 9.(4--m)(4-÷m)
10. 2y(y—4)(y2÷4y+ 16) Page 17
22 2.m’4
xyz np
3. 3f5 14
1•
5. -3x2— 6x ÷
______
x—3 Page 8
1.4a5—7a+3
6 5 3 2
2.5x —4x +5x —6x —14 3.-l9x2÷5x+7
4. 1 2x6+ 1 3x5+ 32x4— 1 2x3+ 1 6x 5.-18x2+i8x—2i
6.7x ÷3x—22
7. 29x2 + 4x + 14 8. 14x7— 13x6+ i8x5
Page 13
1.3(a ÷a—2)2
2. 2y3(y + 7)
9.-Ax2 —14x —5
10. 15x7+ 12x5÷ 20x4 + 6x3— 8x— 14 Page 9
1. x6
6. 1
3. aa 2. -r
y 7.
4. 1
-3w
+ 7x4— 5x2— Ax + 11
9 r3) 8. 1 Oce(d + 2f —3g) Page 14
5.16b 1.(x—9)(x+7)
2 3.(x+1)(x+1) 9. m 10. k 5. (4x + 3)(2x —3)
7. (3x + 2)(4x + 5) Page 15
8. X 2
2. (x—5)(x—5) 4. (2x + 1)(x —3) 6. (3x — 2)(x + 4) 8. (2x ÷ 5)(3x + 4)
+ 32x2
2. 3(x — 12)(x + 4) 4. 3x(x — 8)(x + 6) 6. -3x(x—5)(x—iO) 8. 2x2(x— 11 )(x — 12)
+ 4d6)
16x2—16x + 8
5 4 3
-44x —61x +28x 44x3+ 49x2—17x + 56
100x4—70x3—50x2— 165x—90
5. (f—5)(f—9)
—7t3(t— 1)
4. 1
(w-2)(w-3) 6. 2(d2—2)
Sd
73
Algebra II Grades 6—8—RBPO83O
F J
Answer Pages
Page 18
1. 42
2y z
2.
3.
16m np22
16 81 y
4.
Page 23 1. 4ce1d
2 7 Sr—
3.xy Xy
5.
(x—9)(x+ 1)
.3X.a(X — 2)
-7 3(f + 3)2
2.
4.
6.
5. 3(y + 2)10
7. 7 + 7J;
Page 19
7b’J2bc
3 2 2
x’q75x y 8x2+ 6x-q3+ 3 6.
2 (x3— 2)(x + 2)
1. ha
8. 61 Page 24
1.
6
24E 5
3. 4h—6g qh
2. f2
3.
2
5. -3d2+6d+2 6d
2. 29h 32 4. 2d—1
B 6. lid 10
8. -20c2+5c—7 12c(3c + 2)
5. 25+5M 14
4*45 3
6. -12—34ã 13
7. 7e÷8 10(f+ 1)
7. 7 + 44
Page 20
31
I. 4
8. X—X’1+X’J
3. no solution
x —62
2.2 4. 5
85 12
2. 5 4.-B 6. -63 8. 7
Page 21 1. 2gd’)d 3. 7b3ek2q
3.2 4flT
7.-3mj ‘qmj
9. -3f 2 Page 22
5. i0fkd2c3Jiã2
2.-i 6. 1 10.0
3.-i 7. 1
2
V
4. 1 2 8.21
4.2
6.
_______
3 8. 5e
6
10. (y—2)j8(y—2)
Page 25 1.9
3 19
5.78 7. 5 Page 26
1.1 5. I 9. 1 Page 27
1. 2413 — 4i4 3. 88 — 7l-’
5. 3 + 7.25 9. 43 + 61 Page 28
1. x2/3
4b 315
3. ()
2’’°
7 2312 9.
-
C
2. 8— I 4.42 6. -12 + 41 8. 3’j + 61 10. 6—8/
2. 0
3.4 + 5411
4.2 — 5.
6. 30 + 54
3 12t
7.÷y4 8. 4x ÷ (-2x —
115 2J5 3/5 2 3 115
2.x y z or(xyz)
4 33/28
6. x6,7
8. x y56
116 1/6 1/6
10.(xy) orx y
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