\(\frac{3^8.2^6+3^8.2^8}{3^9.2^6-3^8.2^8}\)
=\(\frac{3^8.2^6.\left(1+2^2\right)}{3^8.2^6\left(3-2^2\right)}\)
=\(\frac{5}{-1}\)
=\(-5\)
\(\frac{3^8.2^6+9^4.4^4}{3^9.4^3-3^8.2^8}=\frac{3^8.2^6+3^8.2^8}{3^9.2^6-3^8.2^8}=\frac{3^8.2^6\left(1+2^2\right)}{3^8.2^6\left(3-2^2\right)}\)
=\(\frac{3^8.2^6.5}{3^8.2^6.\left(-1\right)}=\frac{5}{-1}=\frac{-5}{1}=5\)
xin lỗi mk viết nhầm =-5 chứ ko phải =5