Algebra Demystified 2nd Ed

222 algebra De mystif ieD

6. Solve

3

4

2

4

16

xx+ x^216

+

−

=

−.

a. x= 4

b. x=^4

5

C. x=^5

4

D. There is no solution.

7. Solve 12   −+=x     25.
   a. x= 0
   b. x= 4
   C. x=− 4
   D. There is no solution.


8. Solve 24 . xx−= . 0750   .  48 − . 033.
   a. x=^3
   8
   b. x=^7
   32
   C. x=^9
   16
   D. There is no solution.


9. Solve for W:^45
   W

+=Z.

a. W=^4 +Z

5

b. W

Z

=

−

4

5

C. WZ=+− 45

D. The equation cannot be solved for W.

10. Solve (  23 xx−+ )(  ) 52   =+( xx ) 12 ( − ).
    a. x=^13
    4
    b. x=^13
    16
    C. x=−^13
    4
    D. x=^13
    10