Wk Ind HW

When writing up each problem , make sure that you show all the relevant steps . Failure to show work will result in significant point deductions The answer is important , but the steps you take are equally important Notation is also important and must be correct for full credit

For every problem that is an application (word ) problem , include a statement of the meaning of the variables and a summary sentence that presents your results

Page 387 , Problem 92 Reduce the expression to lowest terms

4x2 /2x9 (2 2x2 /2x9

2 /x7 p

Page 387 , Problem 98 Reduce the expression to lowest terms (-2t - 4 (4 - t2

-2 (t 2 /[ (2 t (2 - t )]

-2 (2 - t

Page 387 , Problem 108 Reduce the expression to lowest terms (4w2 - 12w 36 (2w3 54

4 (w2 - 3w 9 /[2 (w3 27 )]

4 (w2 - 3w 9 /[2 (w 3 (w2 - 3w 9 )]

2 (w 3

Page 395 , Problem 70 Perform the indicated operation

-2a2 /3a2 20a /15a3

-2 /3 4 /3a2

-8 /9a2

Page 395 , Problem 76 Perform the indicated operation (w2 - 1 (w - 1 )2 (w - 1 (w2 2w 1

[ (w 1 (w - 1 )] (w - 1 )2 (w - 1 (w 1 )2

1 (w 1

Page 395 , Problem 78 Perform the indicated operation (x3 - 1 (x2 1 (9x2 9x 9 (x2 - x

[ (x - 1 (x2 x 1 )] (x2 1 9 (x2 x 1 /x (x - 1

9 (x2 x 1 )2 /x (x2 1

Page 403 , Problem 68 Find the LCD for the given rational expressions and convert each rational expression into an equivalent rational expression with the LCD as the denominator

5x (x2 - 1 , -4 (x2 - 2x 1

LCD (x - 1 )2 (x 1

5x (x - 1 /[ (x - 1 )2 (x 1 )] , -4 (x 1 /[ (x - 1 )2 (x 1 )] (5x2 - 5x /[ (x - 1 )2 (x 1 )] (-4x - 4 /[ (x - 1 )2 (x 1 )]

Page 411 , Problem 78 Perform the indicated operation . Reduce the answer to lowest terms

3 /2y - 3 (2y 4

LCD 2y (2y 4

[3 (2y 4 ) - 3 (2y )] /[2y (2y 4 )] (6y 12 - 6y /[2y (2y 4 )]

12 /[2y (2y 4 )]

12 /[4 (y2 2

3 (y2 2

Page 411 , Problem 84 Perform the indicated operation . Reduce the answer to lowest terms

4 /3n 2 (n 1 2 (n2 n

LCD 3 (n2 n

[4 (n 1 2 (3n 2 (3 )] /[3 (n2 n )] (4n 4 6n 6 /[3 (n2 n )] (10n 10 /[3 (n2 n )]

Page 411 , Problem 88 Traveling time . After leaving Moose Jaw , Hanson drove 200 kilometers at x km /hr and then decreased his speed 20 km /hr and drove 240 extra kilometers . Make a table like the one in problem 85 . Write a rational expression for his that expression for x 100 km /hr

Let x be equal to the Hanson 's driving speed .If x 100 km /hr...