Question

(x-2)(3x+5)=(2x-4)(x+1)

Answer 1

Đề thiếu rồi bạn

Answer 2

\(\Leftrightarrow3x^2+5x-6x-10=2x^2+2x-4x-4\)

\(\Leftrightarrow x^2+x-6=0\)

\(\Leftrightarrow x\left(x+3\right)-2\left(x+3\right)=0\Leftrightarrow\left\{{}\begin{matrix}x+3=0\\x-2=0\end{matrix}\right.\)

\(\Leftrightarrow\left\{{}\begin{matrix}x=-3\\x=2\end{matrix}\right.\)

Answer 3

Ta có: \(\left(x-2\right)\left(3x+5\right)=\left(2x-4\right)\left(x+1\right)\)

\(\Leftrightarrow3x^2+5x-6x-10-2x^2-2x+4x+4=0\)

\(\Leftrightarrow x^2+x-6=0\)

\(\Leftrightarrow\left[{}\begin{matrix}x=-3\\x=2\end{matrix}\right.\)