Question

x/x-3+x/x+1=4x/(+1)(x-3)

Answer 1

\(\Leftrightarrow x\left(x+1\right)+x\left(x-3\right)=4x\)

\(\Leftrightarrow x^2+x+x^2-3x-4x=0\)

\(\Leftrightarrow2x^2-6x=0\)

=>2x(x-3)=0

=>x=0(nhận)hoặc x=3(loại)