Question

[Mạc Hy]

tính nhanh

\(\frac{2^{15}.9^4}{6^6.8^3}\)     \(-\frac{45^{10}.5^{20}}{75^{15}}\)   \(\frac{8^{20}+4^{20}}{4^{25}+6^{35}}\)    \(\frac{3^{10}.2^{10}}{16.4.243}\)

tính

\(A=\frac{1}{17}+\frac{1}{17.27}+\frac{1}{27.37}+....+\frac{1}{2007.2017}\)

\(A=\left(\frac{1}{2^2}-1\right).\left(\frac{1}{3^2}-1\right).\left(\frac{1}{4^2}-1\right)......\left(\frac{1}{2015^2}-1\right)\)

\(A=3+3^2+3^3+....+3^{2015}\)

\(A=1+3^2+3^4+.......+3^{2016}\)

\(2016^{\left(169-1^2\right).\left(169-2^2\right).\left(169-13^2\right)}\)\(2015^{2.3.4....2016}\)

\(\frac{4^6.9^5+6^9.120}{8^4.3^{12}-6^{11}}\)

giải hộ mình với, mai phải nộp r :<