First, simplify (X-2) (x-3) + 2 (x + 6) (X-5) - 3 (X & sup2; - 7x + 13), and then calculate its value, where x = 3 and 2 / 1

First, simplify (X-2) (x-3) + 2 (x + 6) (X-5) - 3 (X & sup2; - 7x + 13), and then calculate its value, where x = 3 and 2 / 1


(x-2)(x-3)+2(x+6)(x-5)-3(x²-7x+13)
=x²-5x+6+2(x²+x-30)-3x²+21x-39
=3x²-3x-54-3x²+21x-39
=18x-93
X = 3 and 2 / 1
18x=63
So the original formula = 63-93 = - 30