Question

[Đỗ Như Minh Hiếu]

tính A= 11.3⁸².3⁷-9¹⁵/(2.3¹⁴)²

Answer 1

[Nguyễn Lê Phước Thịnh]

Sửa đề: \(A=\dfrac{11\cdot3^{22}\cdot3^7-9^{15}}{\left(2\cdot3^{14}\right)^2}\)

\(=\dfrac{11\cdot3^{29}-3^{30}}{4\cdot3^{28}}=\dfrac{3^{29}\left(11-3^2\right)}{4\cdot3^{28}}=3\cdot\dfrac{2}{4}=\dfrac{3}{2}\)