Question

simplifique as expressões reduzindo-as ao máximo;

a) 2x+3(3-2x)-2(1-x)
b) a(a+b-c)+b(b+c-a)+c(a-b+c)

Answer 1

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

$a(a+b-c)+b(b+c-a)+c(a-b+c)$
$a^{2} +ab-ac+b^{2}+bc-ba+ca-cb+c^{2}$
$a^{2}+b^{2}+c^{2}$