Question

Find the nonpermissible replacement for x inthis expression.x24x – 8

Answer 1

The given expression is

$\frac{x^2}{4x-8}$

This expression is not defined if 4x-8=0.

$4x-8=0$

$4x=8$

$x=\frac{8}{4}$$x=2$

Hence the nonpermissible replacement os x value is 2.