Question

\(A\)\(=\) \(\frac{4^5.9^4-2.6^9}{2^{10}.3^8+6^8.20}\)

Rút gọn biểu thức \(A\)

Answer 1

\(A=\frac{2^{10}.3^8-2.2^9.3^9}{2^{10}.3^8+2^8.3^8.2^2.5}\)

\(A=\frac{2^{10}.3^8-2^{10}.3^9}{2^{10}.3^8+2^{10}.3^8.5}\)

\(A=\frac{2^{10}.3^8\left(1-3\right)}{2^{10}.3^8\left(1+5\right)}\)

\(A=\frac{1-3}{1+5}\)

\(A=-\frac{1}{3}\)

Answer 2

cảm ơn cậu nhiều lắm 

Answer 3

\(\frac{2^{10}.3^8-2^{10}.3^9}{2^{10}.3^8+2^{10}.3^8.5}\)=\(\frac{3^8-3^9}{3^8+3^8.5}\)=\(\frac{3^8\left(1-3\right)}{3^8\left(1-5\right)}\)=\(\frac{1-3}{1+5}\)=\(-\frac{1}{3}\)