Question

1) Resolva as multiplicações abaixo:

a) 2x .( 5x + 4) =

b) 3x . (x + 6) =

c) x . (x² + 2) =

d) (x + 3) . (x + 4) =

e) (x + 5) . (x + 8) =

f) (x + 7) . (x + 2) =

g) (x + 3) . (x + 1) =​

Answer 1

Resposta:

Explicação passo-a-passo:

a) 2x .( 5x + 4)

= 10x^2 + 8x

__________

b) 3x . (x + 6)

= 3x^2 + 18x

___________

c) x . (x² + 2)

= x^3 + 2x

__________

d) (x + 3) . (x + 4)

= x^2 + 4x + 3x + 12

= x^2 + 7x + 12

_____________

e) (x + 5) . (x + 8)

= x^2 + 8x + 5x + 40

= x^2 + 13x + 40

_____________

f) (x + 7) . (x + 2)

= x^2 + 2x + 7x + 14

= x^2 + 9x + 14

____________

g) (x + 3) . (x + 1)

= x^2 + x + 3x + 3

= x^2 + 4x + 3