Easy Algebra Step-by-Step

Rational Expressions 153

Exercise 13

For 1–10, reduce to lowest terms.

1.

18

54

342

32

xy^3 z

xz^3

2.

15

3

y

y

3.

x

x

−

−

5

5

4.

4

4

a

+a

5.

26

(^256)
x
xx^2555
6.
x
xx
2
2
4
44
−

• 4 xx

7. xabyab
   xy

( + ) y(a )

+

8.

7

35 14

x

x−

9.

4424

218

2

2

xy xy y

x

4 xy−

10.

xy

xy^33 y

For 11–15, compute as indicated.

11. xx
    x

x

x

2

2

44 x

9

26 x

• 2

⋅

−

12.

x

x

x

x

− (^1) ÷ +
21 x−
1
42 x−

13.^2
23

4

xx^2222 x 3

+

−

14.^2
14 49

1

(^27)
x
xx^2 −+ 1414 x x
−
−
15.
2
3
1
1
x
x+