Algebra Demystified 2nd Ed

(Marvins-Underground-K-12) #1

384 alGEbra De mystif ieD



  1. If xx^2 +  91   +  80 =  , then
    a. x=36,
    b. x=− −36,
    C. x=29,


d. x=− −29,


  1. If 32 xx^2 –  –  20 =  , then


a. x=−±^127
3

b. x=^12 ±^7
3

C. x=± 2 7
3

d. x=^17 ±
3


  1. If 91 x^2 –  = 0 , then


a. x=^1
3
b. x=±^1
3
C. x=−^1
3
d. x= 3


  1. If^2
    6


2
x 215

x
– ^ =  x – 

, then

a. x=35,
b. x=± 462
C. x=56,
d. there is no solution.
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