Question

Make (X-12)/(x-8) equal to zero

A)-2
B)-8
C)2
D)8

Answer 1

x=12 makes (X-12)/(x-8) equal to zero

x=8 makes (X-12)/(x-8) undefined

Explanation:

(x-12)/(x-8) = 0

The first step is to multiply each side by x-8

(x-8) *(x-12)/(x-8) = 0 * (x-8)

This cancels the denominator. x≠ 8 because the denominator would equal 0 and then it becomes undefined.

x-12 = 0

Add 12 to each side

x-12+12 = 0+12

x = 12

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