Question

[Phạm Vũ Mai Trang]

D= 11 * 3 mũ 22 * 3 mũ 7 - 9 mũ 15 trên 2 mũ 2 * 3 mũ 14 tất cả mũ 2

NHanh nhé

Answer 1

[《 ღ Ňɠʉүêŋ ➻ Ňɠʉүêŋ ღ 》]

\(D=\) \(\frac{11.3^{22}.3^7-9^{15}}{\left(2.3^{14}\right).2}\)

\(=\) \(\frac{11.3^{22+7}-\left(3^2\right)^{15}}{2^2.\left(3^{14}\right)^2}\)

\(=\) \(\frac{11.3^{29}-3^{30}}{4.3^{28}}\)

\(=\) \(\frac{11.3^{29}-3^{29}.3}{4.3^{28}}\)

\(=\) \(\frac{3^{29}\left(11-3\right)}{3^{28}.4}\)

\(=\) \(\frac{3^{28}.3.8}{3^{28}.4}\)

\(=\) \(\frac{3^{28}.3.4.2}{3^{28}.4}\)

\(=\) \(6\)

Chúc bn hok tốt ~

Answer 2

[Member lỗi thời :>>]

\(D=\frac{11.3^{22}.3^7-9^{15}}{\left(2.3^{14}\right).2}\)

\(=\frac{11.3^{22+7}-\left(3^2\right)^{15}}{2^2.\left(3^{14}\right)^2}\)

\(=\frac{11.3^{29}-3^{30}}{4.3^{28}}\)

\(=\frac{11.3^{29}-3^{29}.3}{4.3^{28}}\)

\(=\frac{3^{29}\left(11-3\right)}{3^{28}.4}\)

\(=\frac{3^{28}.3.8}{3^{28}.4}\)

\(=\frac{3^{28}.3.4.2}{3^{28}.4}=6\)