Question

a-(x+7).(x+5)
b-(2a+b).(a-b)
c-(y-6).(y-5)
d-(2x+1).(-6x²-5x+3)
e-(a²-1).(2a²-2a+1)
f-(a+x).(a²-ax+x²)

Answer 1

A) (x+7)(x+5) <=> x.x+5x+7x+35 <=> x.x+12x+35
B) (2a+b)(a-b) <=> 2a.a-2ab+ab-b.b <=> 2a.a-ab+b.b
C) (y-6)(y-5) <=> y.y-5y-6y+30 <=> y.y-11y+30
D) (2x-1)((-6x.x)-5x+3) <=> -12x.x.x-10x.x+6x+6x.x+5x-3
desculpa mas tenho que sair :(