SOLUTION: Solve the equation x^2 / x-4 = 16 / x-4 a. {4} b. {-4} c. {4,-4} d. 0 (not equal)

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: Solve the equation x^2 / x-4 = 16 / x-4 a. {4} b. {-4} c. {4,-4} d. 0 (not equal)      Log On


   

Question 414358: Solve the equation
x^2 / x-4 = 16 / x-4
a. {4}
b. {-4}
c. {4,-4}
d. 0 (not equal)
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2+%2F+%28x-4%29+=+16+%2F+%28x-4%29..cross multiply

x%5E2%28x-4%29++=+16%28x-4%29++

x%5E2cross%28%28x-4%29%29++=+16cross%28%28x-4%29%29++

x%5E2=+16

x=+sqrt%2816%29

x= +-4

so, the answer is c. {4,-4}