Question

[Vũ Thị Khánh Ly]

Tinh

A = 11. 3 mũ 22 . 3 mũ 7 - 9 mũ 15

       ( 2 . 314 ) mũ 2

Answer 1

[#❤️_Tiểu-La_❤️#]

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

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

\(\Rightarrow\)  \(A=\frac{11.3^{29}-3^{30}}{2^2.3^{28}}\)

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

\(\Rightarrow\)  \(A=\frac{3^{29}.8}{2^2.3^{28}}\)

\(\Rightarrow\)  \(A=\frac{3^{29}.2^3}{2^2.3^{28}}\)

\(\Rightarrow\)  \(A=3.2\)

\(\Rightarrow\)  \(A=6\)

   Vậy A = 6

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