Question

Calcule os produtos:

(5x-2). (2x-1)

(3x+1).(3x-1)

(2X+5).(2x-5)

(6x^2-4).(6x^2+4) \6x^2 significa
Seis x sobre dois

(3x^2-4x-3).(x+1)

(x^2-x-1).(x-3)

(X-1).(x-2).(x-3)

(x+2).(x-1).(x+3)

(X^3-2).(x^3+8)

(X^2+2).(x^2+6)

Answer 1

1) (5x-2).(2x-1)
3x.1x=3x

2) (3x+1).(3x-1)
4x.2x=8x