Algebra Demystified 2nd Ed

Chapter 6 FaCtoring and the distributive ProPerty 179

x

x

4

2

64

8

−

−

(^) =
a. ()xx−+ 44 ()
b. ()xx−+ 22 ()
C. x^2 + 8
d. ()x+ 82

12. (  25 x−= )^2
    a. 42 xx^2 −+ 025
    b. 42 x^2 + 5
    C. 42 x^2 − 5
    d. 42 xx^2 +− 025


13. xxxx

2

2

34

3114

+−

+−

(^) =
(^)
a. x
x

• 
  


• 
  

  1
  31
  b. x
  x

  
  


• 
  

  −
  1
  31
  C. x
  x
  −
  −
  1
  31
  d. x
  x
  −

  
  


• 
  

  1
  31

  
  

14.^51
15

x

x

−

−

=

a. 51 x+

b. 15 − x

C. 1

d. − 1

15.^4368 yxxy^ −− =

a. −^1

4

b. −^1

2

C.^1

2

d.^4368 yxxy−− cannot be simplified.