25 . 92 / 27 . 33
= 25 . 32 . 32 / 25 . 22 . 32 . 3
= ( 25 . 32 . 3 ) . 3 / ( 25 . 32 . 3 ) .22
= 3 / 4
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Các câu hỏi tương tự
tính
\(\frac{2}{4.7}-\frac{3}{5.9}+\frac{2}{7.10}-\frac{3}{9.12}+...+\frac{2}{301.304}-\frac{3}{401.405}\)
Tính:
\(\frac{2^5.9^3}{27^2.8^2}\)
\(\frac{2}{1.5}+\frac{2}{5.9}+\frac{2}{9.13}+...+\frac{2}{95.99}\)
C=\(\frac{2}{4.7}-\frac{3}{5.9}+\frac{2}{7.10}-\frac{3}{9.13}+...........+\frac{2}{301.304}-\frac{3}{401.405}\)
Các bạn ơi trả lời giúp mình nhanh nhanh nha!
Ai trả lời đúng mình sẽ tick
x+\(\frac{2}{5.9}+\frac{2}{9.13}+\frac{2}{13.17}+...+\frac{2}{41.45}=\frac{-37}{45}\)
a} \(\frac{2}{3}.3^{x+1}-7.3^x=-405\)
b} \(\frac{3}{1-2x}=\frac{-5}{3x-2}\)
c} |2x-1| = |2x+3|
\(^{\frac{4^5.9^4-2.6^9}{2^{10}.3^8+6^8.20}}\)
4\(\frac{1}{2}\)-\(\frac{15}{10.9}-\frac{15}{9.8}-...-\frac{15}{3.2}-\frac{15}{2.1}\)
\(\frac{6}{2.5}+\frac{8}{5.9}+\frac{12}{9.15}\)
\(1-\frac{2}{2.1}-\frac{6}{2.5}-\frac{8}{5.9}-\frac{8}{9.13}\)
\(\frac{3^{19}.2^9+5.9^9.2^9}{3^{19}.2^9+9^{10}.2^{10}}\)
Giúp mình với>>..<<:3