Wk4 HW

Page 549 , Problem 40 Use the product rule for radicals to simplify the expression . All variables represent nonnegative real numbers (w6t2 (w6 (t2

w3 t

w3t

Page 549 , Problem 46 Use the product rule for radicals to simplify the expression . All variables represent nonnegative real numbers

3 (5b9

3 (5 3 (b9

b3 3 (5

b3[3 (5 )]

Page 549 , Problem 50 Use the product rule for radicals to simplify the expression (45 (9 5 (32 5 (32 (5

3 (5

Page 549 , Problem 52 Use the

product rule for radicals to simplify the expression (98 (49 2 (49 (2

7 (2

7 (2

Page 549 , Problem 89 Simpify the radical (27 /16 (27 (16 (33 (42

[3 (3 )] /4

Page 560 , Problem 34 Evaluate the expression

16 (3 /2 (163 (24 (3 (212

26

64

Page 560 , Problem 38 Evaluate the expression

25 (-3 /2 (25-3 (52 (-3 (5 (-6

5 (-3

1 (53

1 (75

Page 561 , Problem 104 Simplify . Assume that all variables are positive numbers . Write answers with positive exponents only (-27x9 (1 /3 (-27 )1 /3 (x9 )1 /3

- (27 )1 /3 (x9 )1 /3

- (33 )1 /3 (x9 )1 /3

-3 x3

-3x3

Page 569 , Problem 88 Simplify the expression (2t5 (10t4

t2 (2t t2 (10

t2 (t2 (2t 10

t4 (2 2 5 t

2t4 (5t

Page 569 , Problem 94 Simplify the expression (3 - 2 ?7 (3 2 ?7

3 (3 3 (2 ?7 ) - 3 (2 ?7 ) - (2 ?7 )2

9 - 4 (7

9 - 28

-19

Page 569 , Problem 96 Simplify the expression (1 - ?x )2 (1 - ?x (1 - ?x

12 - ?x - ?x ?x )2

1 - 2 (x x

Page 577 , Problem 10 Write the expression in simplified radical form ?7 ?18

[ ?7 (18 )] (18 )2

[ (7 18 )] /18

[ (7 9 2 )] /18 (3 ?14 /18

[ (14 )] /6

Page 577 , Problem 50 Simplify the expression by rationalizing the denominator

6 (3 - ?18

6 (3 - ?18 (3 ?18 (3 ?18

6 (3 ?18 (3 - ?18 (3 ?18

6 (3 ?18 (9 - 18

6 (3 ?18 (-9

-2 (3 ?18 /3 (-6 - 2 ?18 /3

Page 578 , Problem 76 Write the expression in simplified radical form ?6 ?7 ?14 ?3

[ ?6 ?14 )] /[ ?7 ?3 )] (2 2 3 7 ?21

2 ?21 ?21

2

Page 587 , Problem 20 Find all real solutions (a - 2 )2 25 (a - 2 )2 - (25

a - 2 -5

a - 2 5 or a - 2 -5

a 5 2 or a -5 2

a 7 or a -3

solutions : 7 , -3

Page 587 , Problem 30 Solve the equation . Check for extraneous solutions (a - 1 ) - 5 1 (a - 1 1 5 (a - 1 6 (a - 1 )2 36

a - 1 36

a 36 1

a 37

Check (37 - 1 ) - 5 1 (36 6

6 6

Page 587 , Problem 32 Solve the equation . Check for extraneous...