Question

Calcule as multiplicaçoes:

a) (x-2).(x+5)=

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

c) (x-1).(x²+x+1)=

d) (a3 *a ao cubo* -a2 *a ao quadrado*+a).(a+1)=

e) 5x.(x-3)=

f) (a-1).(a2 *a ao quadrado*-1)

Answer 1

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

X²+5x-2x-10

X²+3x-10

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

6x²+2x-12x-4

6x²-10x-4

C)(x-1).(x²+x+1)

X³+x²+x+x²-x-1

X³+2x²-1

D)(a³-a²).(a+1)

a⁴+a³-a³-a²

a⁴-a²

E)5x.(x-3)

5x²-15x

F)(a-1).(a²-1)

a³-a²-a³+2

-a²+2