Question

Simplifique as expressões
a)(2x+3)(3-2x)-2(1-x)
b)(2x-1)(x+2)+(x-1)(x-2)
c)(x-1)(x²+x+1)-(x-1)(x²+1)
d)(a+b)(a+b-c)-c(c+a-b)

Answer 1

a) 2x+3 (3-2x)-2 (1-x)
2x +9-6x-2+2x
2x+2x-6x+9-2
-2x+7