Question

(x-3)^2-(x+3)^2

Answer 1

=x^2-6x+9-x^2-6x-9

=-12x

Answer 2

\(\left(x-3\right)^2-\left(x+3\right)^2\\ =x^2-6x+9-\left(x^2+6x+9\right)\\ =x^2-6x+9-x^2-6x-9\\ =x^2-x^2-6x-6x+9-9\\ =-12x\)

Answer 3

\(\left(x-3\right)^2-\left(x+3\right)^2\)

\(=x^2-6x+9-\left(x^2+6x+9\right)\)

\(=x^2-6x+9-x^2-6x-9\)

\(=-12x\)