Question

Solve problem below

g(x) = (x ^ 2 + 4x + 3)/(x ^ 2 - 81)

Answer 1

x=9, -9

Explanation:

Use difference of squares to the denominator.

so

`(x^2+4x+3)/((x+9)(x-9))`

If you plug 9 or -9 for x, the denominator becomes 0, meaning that the value would be undefined. Thus, if would not be in the domain of g.

So, x=9, -9