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\(\frac{10.\left(4^6.9^5+6^9.120\right)}{8^4.3^{12}-6^{11}}\)
=\(\frac{2.5.\left[\left(2^2\right)^6.\left(3^2\right)^5+\left(2.3\right)^9.2^3.3.5\right]}{\left(2^3\right)^4.3^{12}-\left(2.3\right)^{11}}\)
=\(\frac{2^{13}.5.3^{10}+2^{13}.5^2.3^{10}}{2^{12}.3^{12}-3^{11}.2^{11}}\)
=\(\frac{2^{13}.5.3^{10}.\left(1+5\right)}{2^{11}.3^{11}.\left(2.3-1\right)}\)
=\(\frac{4.5.6}{3.5}\)
= 8
\(10.\frac{\left(2^2\right)^6.\left(3^3\right)^5+\left(2.3\right)^9.\left(2^3.3.5\right)}{\left(2^4\right)^3.3^{12}-\left(2.3\right)^{11}}\)
\(=10.\frac{2^{12}.3^{15}+2^{12}.3^{10}.5}{2^{12}.3^{12}-2^{11}.3^{11}}\)
\(=10.\frac{2^{12}.3^{10}\left(3^5+1.5\right)}{2^{11}.3^{11}\left(2.3-1\right)}\)
\(=10\frac{2\left(3^5+5\right)}{3.5}\)
\(=10.\frac{496}{15}\)
\(=\frac{992}{3}\)
Study well
10.\(\frac{241864704+1209323520}{2176782336-6^{11}}\)
=10.\(\frac{362797224}{1813985280}\)
=2,000000926
\(\frac{5^{12}.3^9-5^{10}.3^{11}}{5^{10}.3^{10}}\)\(=\frac{5^{10}.3^9(5^2-3^2)}{5^{10}.3^{10}}\)\(=\frac{5^2-3^2}{3}\)\(=\frac{16}{3}\)
Chúc bạn học tốt!