Resposta:
Explicação passo-a-passo:
a)
=(2x−1)⋅(3x²+x)=
= 6x³−x²−x
b)
(x + 1) . (3x - 2)=
=3x²+x−2
c)
(a - 1) . (a + 1) =
=a²−1
d)
(x - 2) . (x + 3)=
=x²+x−6
e)
(3x + 5) . (2x - 4)=
=6x²−2x−20
f)
(x² + x) . (2x - 5)=
=2x³−3x²−5x
g)
(x + 2) . (x² - 3x + 1)=
= x³−x²−5x+2
