Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
ban nao co chuyen shin ko cho minh muon minh giai cho 10 bai nhu the i love pac pac
\(A=\frac{2^{12}.3^4-4^5.9^2}{\left(2^2.3\right)^6+8^4.3^5}\)
\(A=\frac{2^{12}.3^4-2^{10}.3^4}{2^{12}.3^6+2^{12}.3^5}\)
\(A=\frac{2^{10}.3^4\left(2^2-1\right)}{2^{10}.3^4\left(2^2.3^2+2^2.3\right)}\)
\(A=\frac{2^2-1}{2^2.3^2+2^2.3}\)
\(A=\frac{4-1}{36+12}\)
\(A=\frac{3}{48}=\frac{1}{16}\)
\(\frac{27^3.4^5}{6^8}:\left(\frac{5^5.2^4}{10^4}:\frac{6^4}{2^6.3^4}\right)\)
\(=\frac{3^9.2^{10}}{6^8}:\left(5:\frac{1}{2^2}\right)\)\(=3.2^2:20=\frac{12}{20}=\frac{3}{5}\)
\(\frac{27^3.4^5}{6^8}:\left(\frac{5^5.2^4}{10^4}:\frac{6^4}{2^6.3^4}\right)\)
\(=\frac{\left(3^3\right)^3.\left(2^2\right)^5}{\left(3.2\right)^8}:\left(\frac{5^5.2^4}{\left(5.2\right)^4}:\frac{\left(2.3\right)^4}{2^6.3^4}\right)\)
\(=\frac{3^9.2^{10}}{3^8.2^8}:\left(\frac{5^5.2^4}{5^4.2^4}:\frac{2^4.3^4}{2^6.3^4}\right)\)
\(=3.2^2:\left(5:\frac{1}{2^2}\right)\)
\(=3.4:\left(5.4\right)\)
\(=12:20\)
\(=\frac{12}{20}=\frac{3}{5}\)
39.210=39.29.2=69.2=68.12 (rút gọn vs mẫu số)
tương tự vs các phân số trong ngoặc
a: \(=5^2+16\cdot125-1=24+2000=2024\)
b: \(=-145+55+42-42+90=-90+90=0\)
c: =-4+2+6+8-10+13-15=4+8-10-2=12-10-2=0
\(M=\dfrac{-3}{4}\left(\dfrac{2}{11}+\dfrac{9}{11}\right)+2+\dfrac{3}{4}=2\)
\(N=\dfrac{6}{8}+\dfrac{1}{8}-\dfrac{3}{16}\cdot16=\dfrac{7}{8}-3=-\dfrac{17}{8}\)
\(M=\dfrac{-3}{4}\cdot\dfrac{2}{11}+\dfrac{-3}{4}\cdot\dfrac{9}{11}+2\dfrac{3}{4}\)
\(=\dfrac{-3}{4}\cdot\left(\dfrac{2}{11}+\dfrac{9}{11}\right)+\dfrac{11}{4}\\ =\dfrac{-3}{4}\cdot1+\dfrac{11}{4}\\ =-\dfrac{3}{4}+\dfrac{11}{4}\\ =\dfrac{8}{4}\\ =2\)
\(N=\dfrac{6}{8}+\dfrac{5}{8}:5-\dfrac{3}{16}\cdot\left(-4\right)^2\)
\(=\dfrac{6}{8}+\dfrac{1}{8}-\dfrac{3}{16}\cdot16\\ =\dfrac{7}{8}-3\\ =\dfrac{-17}{8}\)
\(\dfrac{2^{10}\cdot3^8-6^8}{4^4\cdot9^5}\)
\(=\dfrac{2^{10}\cdot3^8-2^8\cdot3^8}{2^8\cdot3^{10}}\)
\(=\dfrac{2^8\cdot3^8\left(2^2-1\right)}{2^8\cdot3^{10}}=\dfrac{1}{3^2}\cdot3=\dfrac{1}{3}\)