khi bạn xem naruto quá 180 phút
a, Với x khác -1 ; 1
\(P=\left(\frac{2x\left(x-1\right)+2\left(x+1\right)+4x}{2\left(x^2-1\right)}\right):\left(x+1\right)\)
\(=\frac{2x^2+4x+2}{2\left(x^2-1\right)}:\left(x+1\right)=\frac{2\left(x+1\right)^3}{2\left(x^2-1\right)}=\frac{x+1}{x-1}\)
b, Ta có \(P=2\Leftrightarrow\frac{x+1}{x-1}=2\Rightarrow x+1=2x-2\Leftrightarrow x=3\left(tmđk\right)\)
help me
help me =((