[toán] nâng cao

K

khaiproqn81

a)

$\frac{11.3^{22}.3^7-9^{15}}{(2.3^{14})^2}$

\Rightarrow $\frac{11.3^{29}-3^{30}}{2^2.3^{28}}$

\Rightarrow $\frac{3^{29}(11-3)}{4.3^{28}}$

\Rightarrow $\frac{3.2}{1}$

\Rightarrow $=6$

Dấu suy ra phải thay bằng dấu = mới đúng
 
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