Question

Tính 

\(\frac{\left[\left(e-m\right)^2-\left(e+m\right)^2\right]\left[\left(y-1\right)^2-\left(y+1\right)^2\right]}{a.16.nh}.\frac{ê}{\frac{1}{u}}\)

P/s đề này ms đúng nha

Answer 1

bài này hơi khó

\(\frac{\left[\left(e-m\right)^2-\left(e+m\right)^2\right]\left[\left(y-1\right)^2\left(y+1\right)^2\right]}{a.16.nh}.\frac{ê}{\frac{1}{u}}\)

\(=\frac{\left[\left(e-m\right)^2\left(e+m\right)^2\right]\left[\left(y-1\right)^2\left(y+1\right)^2\right]}{16.anh}.\frac{êu}{1}\)

\(=\frac{\left(e^2-2em+m^2-e^2-2em-m^2\right)\left(y^2-2y+1-y^2-2y-1\right)}{16.anh}\)

\(=\frac{-4em\left(-4y\right)}{16.anh}.êu\)

\(=\frac{emy}{anh}.êu\)

\(=\frac{em.yêu}{anh}\)

Answer 2

đề gì lạ thế man