Question

(X-2)(X-3)+2(X+6)(X-5)-3(X^2+7X+13)

Answer 1

(x-2)(x-3)+2(x+6)(x-5)-3(x^2+7x+13)

=x^2-5x+6+2(x^2+x-30)-(3x^2+21x+39)

=x^2-5x+6+2x^2+2x-60-3x^2-21x-39

=-24x-93