Mk mak lm mấy cái con toán này
Thì mk sáng mai cx ko lm xng đôu
Bấm mẹ máy tính cho nó nhanh
K mk
\(a)\)\(\frac{10^{12}+5^{11}.2^9-5^{13}.2^8}{4.5^5.10^6}\)
\(=\)\(\frac{2^{12}.5^{12}+2^9.5^{11}-2^8.5^{13}}{2^8.5^{11}}\)
\(=\)\(\frac{2^8.5^{11}\left(2^4.5+2-5^2\right)}{2^8.5^{11}}\)
\(=\)\(2^4.5+2-5^2\)
\(=\)\(80+2-25\)
\(=\)\(57\)
Chúc bạn học tốt ~
\(b)\)\(\frac{9^{30}-27^{19}}{3^{57}}+\frac{125^9-25^{12}}{5^{24}}\)
\(=\)\(\frac{3^{60}-3^{57}}{3^{57}}+\frac{5^{27}+5^{24}}{5^{24}}\)
\(=\)\(\frac{3^{57}\left(3^3-1\right)}{3^{57}}+\frac{5^{24}\left(5^3+1\right)}{5^{24}}\)
\(=\)\(3^3-1+5^3+1\)
\(=\)\(27-1+125+1\)
\(=\)\(152\)
Chúc bạn học tốt ~
