Question

Solve 32=(x-7)(x+7)

Answer 1

expanding

`(x-7)(x+7)=x^2-49 \\ 32= x^(2) -49 \\ x^2=81 \\ x=9 \\ Or \\ x=-9`

Answer 2

32=(x+7)(x-7)
32=x^2-7x+7x-49
Add 49 both sides
81=x^2-7x+7x
Combine like terms
81=x^2
Then take to square of 81
X=9
Hope this helps good luck