Question

(HELPPP) -Agrupe convenientemente os termos e fatore :

$a) \: ax + ay - bx - by \\ b) {m}^{2} - mn - 3m + 3n \\ c) {x}^{3} + {2x}^{2} + 2x + 4 \\ b) {7x}^{2} - y + x - 7xy$

Answer 1

$a) \: ax + ay - bx - by \\ a(x+y)-b(x+y)\\ (a-b)(x+y)\\ b) {m}^{2} - mn - 3m + 3n \\ m(m-n)-3(m-n)\\ (m-3)(m-n)\\ c) {x}^{3} + {2x}^{2} + 2x + 4 \\ x^2 (x+2)+2(x+2)\\ (x^2+2)(x+2)\\ b) {7x}^{2} - y + x - 7xy\\ {7x}^{2} + x- y- 7xy\\ x(7x+1) -y(7x+1)\\ (x-y)(7x+1)$