Question

Выполните умножение: 3a3⋅(–2a2+7a–3)

Answer 1

$3a {}^{3} \times ( - 2a {}^{2} + 7a - 3) =3a {}^{3} \times ( - 2a {}^{2}) + 3a {}^{3} \times \: 7a +3a {}^{3} \times \: ( - 3) = - 6a {}^{5} + 21a {}^{4} - 9a {}^{3}$