\(=\dfrac{11\cdot3^{21}-3^{30}}{2^2\cdot3^{28}}=\dfrac{3^{21}\left(11-3^7\right)}{2^2\cdot3^{28}}=\dfrac{-2176}{2^2\cdot3^7}=\dfrac{-2176}{8748}=\dfrac{-544}{2187}\)

\(A=\frac{11.3^{22}.3^7.9^{15}}{\left(2.3^{14}\right)^2}\)

\(A=\frac{11.3^{29}-3^{30}}{2^2.\left(3^{14}\right)^2}\)

\(A=\frac{3^{29}.\left(11-3\right)}{2^2.3^{28}}\)

\(A=\frac{3.2}{1.1}\)

\(A=\frac{6}{1}\)

\(A=6\)

A=\(\dfrac{11.3^{22}.3^7-9^{15}}{\left(2.3^{14}\right)^2}=\dfrac{11.3^{29}-3^{29}.3}{2^2.3^{28}}=\dfrac{3^{29}.\left(11-3\right)}{2^2.3^{28}}=\dfrac{3^{29}.2^3}{2^2.3^{28}}=3.2=6\)

\(A=\dfrac{11\cdot3^{22}\cdot3^7-9^{15}}{\left(2\cdot3^{14}\right)^2}=\dfrac{11\cdot3^{29}-3^{30}}{2^2\cdot3^{28}}\)

\(=\dfrac{3^{29}\cdot2^3}{3^{28}\cdot2^2}=3\cdot2=6\)

Toán lớp 6 má đưa zô đây làm cái zề ???

B = 11 . 3²² . 3⁷ - 9¹⁵ / (2 . 3¹⁴)²

B = 11 . 3²⁹ - (3²)¹⁵ / 2² . 3²⁸

B = 11 . 3²⁹ - 3³⁰ / 2² . 3²⁸

B = 3²⁹ . (11 - 3) / 2² . 3²⁸

B = 3²⁹ . 8 / 2² . 3²⁸

B = 3²⁹ . 2³ / 2² . 3²⁸

B = 3 . 2

B = 6

6