Question

\(\frac{15.3^{11}+4.27^4}{9^7}\)

Answer 1

\(\frac{15.3^{11}+4.27^4}{9^7}\)

\(=\frac{5.3.3^{11}+4.\left(3^3\right)^4}{\left(3^2\right)^7}\)

\(=\frac{5.3^{12}+4.3^{12}}{3^{14}}\)

\(=\frac{3^{12}.\left(5+4\right)}{3^{14}}\)

\(=\frac{3^{12}.9}{3^{14}}\)

\(=\frac{3^{12}.3^2}{3^{14}}\)

\(=\frac{3^{14}}{3^{14}}\)

\(=1\)

Chúc bạn học tốt !!! 

Answer 2

\(A=\frac{15.3^{11}+4.27^4}{9^7}\)

\(\Rightarrow\frac{3.5.3^{11}+4.3^{3.4}}{3^{2.7}}\)

\(\Rightarrow\frac{3^{12}.5+3^{12}.4}{3^{14}}\)

\(\Rightarrow\frac{3^{12}\left(5+4\right)}{3^{14}}\)

\(\Rightarrow\frac{9}{3^2}=\frac{9}{9}=1\)

Vậy ....

Answer 3

thanks ban

Answer 4

 \(\frac{15.177147+4.531441}{4782969}\)

\(\frac{2657206+2125764}{4782969}\)

\(\frac{4782969}{4782969}\)

1