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\(=\frac{\left(2^2\right)^5.\left(3^3\right)^4-2.\left(2.3\right)^9}{2^{10}.3^8+\left(2.3\right)^8.2.10}\)
\(=\frac{2^{10}.3^{12}-2.2^9.3^9}{2^{10}.3^8+2^8.2^2.3^8.5}\)
\(=\frac{2^{10}.\left(3^{12}-3^9\right)}{2^{10}.3^8.\left(1+5\right)}\)
\(=\frac{3^9.\left(3^3-1\right)}{3^8.3.2}\)
\(=\frac{3^9.26}{3^9.2}\)
\(=\frac{26}{2}=13\)
\(\frac{4^5.9^4-2.6^9}{2^{10}.3^8+6^8.20}\)
\(=\frac{\left(2^2\right)^5.\left(3^3\right)^4-2.\left(2.3\right)^9}{2^{10}.3^8+\left(2.3\right)^8.2.10}\)
\(=\frac{2^{10}.\left(3^{12}-3^9\right)}{2^{10}.3^8.\left(1+5\right)}\)
\(=\frac{3^9\left(3^3-1\right)}{3^8.3.2}\)
\(=\frac{3^9.26}{3^9.2}\)
\(=\frac{26}{2}=13\)
\(\frac{4^5\times9^4-2\times6^9}{2^{10}\times3^8+6^8\times20}=\frac{\left(2^2\right)^5\times\left(3^2\right)^4-2\times6\times6^8}{2^2\times2^8\times3^8+6^8\times20}=\frac{2^{10}\times3^8-12\times6^8}{2^2\times\left(2\times3\right)^8+6^8\times20}\)
\(=\frac{2^2\times2^8\times3^8-12\times6^8}{4\times6^8+6^8\times20}=\frac{2^2\times\left(2\times3\right)^8-12\times6^8}{6^8\times\left(4+20\right)}=\frac{4\times6^8-12\times6^8}{6^8\times24}=\frac{6^8\times\left(4-12\right)}{6^8\times24}=\frac{-8}{24}=-\frac{1}{3}\)
A, B, C,... là tên của bài bạn nha
VD: A, 15+x=15
B, 16+14+14+14
A=\(\frac{\left(2^2\right)^5\cdot\left(3^3\right)^4-2\cdot2^9\cdot3^9}{2^{10}\cdot3^8+2^8\cdot3^8\cdot2^2\cdot5}=\frac{2^{10}\cdot3^{12}-2^{10}\cdot3^9}{2^{10}\cdot3^8+2^{10}\cdot3^8\cdot5}=\frac{2^{10}\cdot3^8\left(3^4-3\right)}{2^{10}\cdot3^8\left(1+5\right)}=\frac{78}{6}=13\)
\(A=\left(2^6+3^7\right)\left(4^8+5^9\right)\left(9^4-3^8\right)\left(10^6-7^5\right)\)
\(A=\left(2^6+3^7\right)\left(4^8+5^9\right)\left(10^6-7^5\right)\left[\left(3^2\right)^4-3^8\right]\)
\(A=\left(2^6+3^7\right)\left(4^8+5^9\right)\left(10^6-5^7\right)\left(3^8-3^8\right)\)
\(A=\left(2^6+3^7\right)\left(4^8+5^9\right)\left(10^6-5^7\right).0\)
\(A=0\)