Question

oi
preciso de ajuda
a) (7x) . (–4x²) =
b) (–4n) . (3n) =
c) (–21y) . (15y) =
d) (32y) . (–17x) =
e) (–3x²y) . (–2x) =
f) (3a2b³) . (–5ab2) =
Se puder colocar toda a conta na explicação eu dou 50 pontos.
obrigada

Answer 1

a)

$= (7x) \: . \: ( - 4x {}^{2} )$

$= - 7x \: . \: 4x {}^{2}$

$\boxed{ = - 28x {}^{3} }$

b)

$= ( - 4n) \: . \: (3n)$

$= - 4n \: . \: 3n$

$\boxed{ = - 12n {}^{2} }$

c)

$= ( - 21y) \: . \: (15y)$

$= - 21y \: . \: 15y$

$\boxed{ = - 315y {}^{2} }$

d)

$= (32y) \: . \: ( - 17x)$

$= - 32y \: . \: 17x$

$\boxed{ = - 544xy}$

e)

$= ( - 3x {}^{2} y) \: . \: ( - 2x)$

$= 3x {}^{2} y \: . \: 2x$

$\boxed{ = 6x {}^{3}y }$

f)

$= (3a {}^{2} b {}^{3} ) \: . \: ( - 5ab {}^{2} )$

$= - 3a {}^{2} b {}^{3} \: . \: 5ab {}^{2}$

$\boxed{ = - 15a {}^{3}b {}^{5} }$

Att. NLE Top Shotta

Answer 2

Resposta:

28x³

-12n²

-315y²

- 544xy

-6x³y

15a³b⁴

espero ter ajudado