Question

Agrupamento

a)xy+x-2y-2

b)2a+2b+ax+bx

c)ax+bx+ay+by+az+bz

d)(x+y)^2-2(x+y)

e)ax-a+mx/3 - m/3

Answer 1

vamos lá...

$a) \\ xy+x-2y-2= \\ x(y+1)-2(y+1)= \\ (x-2)(y+1) \\ \\ b) \\ 2a+2b+ax+bx= \\ 2(a+b)+x(a+b) \\ (2+x)(a+b) \\ \\ c) \\ ax+bx+ay+by+az+bz= \\ x(a+b)+y(a+b)+z(a+b) \\ (x+y+z)(a+b) \\ \\ d) \\ (x+y)^2-2(x+y)= \\ (x+y)(x+y-2) \\ \\ e) \\ ax-a+ \frac{mx}{3} - \frac{m}{3} = \\ \\ a(x-1)+ \frac{m}{3} (x-1)= \\ \\ (a+ \frac{m}{3} )(x-1)$