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

Answer:

x=-3  and x=+3

Step-by-step explanation:

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

We need to solve for x

$\frac{x^2-9}{x^2+6x+8} =0$

Multiply the denominator on both sides

$\frac{x^2-9}{x^2+6x+8} *x^2+6x+8 =0*x^2+6x+8$

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