Question

The expression x^2-9/x^2+6x+8 is equal to zero
when x =

Answer 1

The expression x^2-9/x^2+6x+8 is equal to zero
when x =-3,+3

Answer 2

x=-3 and x=+3

Explanation:

x^2-9/x^2+6x+8 is equal to zero

We need to solve for x

`(x^2-9)/(x^2+6x+8) =0`

Multiply the denominator on both sides

`(x^2-9)/(x^2+6x+8) *x^2+6x+8 =0*x^2+6x+8`

x^2 - 9 =0

add 9 on both sides

x^2 = 9

Take square root on both sides

x = +- 3

So , x=-3 and x=+3