Question

(5.3¹¹ + 4.3¹²):(3⁹.5²-3⁹ .2³)

Answer 1

=\(\left[3^{11}.\left(5+4.3\right)\right]:\left[3^9.\left(5^2-2^3\right)\right]\)

=\(\left[3^{11}.17\right]:\left[3^9.17\right]=\left(3^{11}:3^9\right).17=9.17=153\)

Answer 2

\(\frac{5.3^{11}+4.3^{12}}{3^9.5^2-3^9.2^3}\)

\(=\frac{5.3^{11}+4.3.^{11}}{3^9.\left(5^2-2^3\right)}\)

\(=\frac{5.3^{11}+12.3^{11}}{3^9.\left(25-8\right)}\)

\(=\frac{3^{11}.\left(5+4\right)}{3^9.17}\)

\(=\frac{3^{11}.9}{3^9.17}\)

\(=\frac{3^9.3^2.9}{3^9.17}\)

\(=\frac{3^2.9}{17}\)

\(=\frac{9.9}{17}=\frac{81}{17}\)

Mình chuyển về phân số nhé. k mình nhé