Question

3x^2-2x(x+1)= -1 TÌM x Làm rõ từng bước ạ

Answer 1

\(3x^2-2x\left(x+1\right)=-1\\ \Leftrightarrow3x^2-2x^2-2x=-1\\ \Leftrightarrow x^2-2x+1=0\\ \Leftrightarrow\left(x-1\right)^2=0\\ \Leftrightarrow x=1\)