Question

Find the nonpermissible replacement for a in
this expression.
a + 6
a-8
Enter the correct answer.

Answer 1

Answer:

8

Step-by-step explanation:

Assuming the given expresion is:

$\frac{a + 6}{a - 8}$

Then we have a rational expression with domain a≠8

This means that we can replace 'a' with all real values except a=8.

We obtain this by setting the denominator equal zero and solve for 'a'.

The reason is that, the expression is not defined when the denominator is zero.

Therefore the non-permisible replacement is 8