Question

efetue as multiplicações (a-1).(a+1)= , (x - 2).(x +3) , (3x +5) . (2x-4), (x2+x).(2x-5)​

Answer 1

Resposta:

(a-1).(a+1)=  a²-1

(x - 2).(x +3) = x²+x-6

(3x +5) . (2x-4)= 6x²-2x-20

(x2+x).(2x-5)​= 6x²-15x