Преобразуй выражение: ${8x^{7n} ⋅ y^8 ⋅ 5x^2 ⋅ y^7}$. $40x^{7n+2}y^{15}$ $13x^{7n+2}y^{15}$ $40x^{14n}y^{15}$

Задание

Преобразуй выражение:

\({8x^{7n} ⋅ y^8 ⋅ 5x^2 ⋅ y^7}\).

Выбери верный вариант.

\(40x^{7n+2}y^{15}\)
\(13x^{7n+2}y^{15}\)
\(40x^{14n}y^{15}\)