Question

Tìm x biết 2x(x-2)+3x-6=0

 

Answer 1

\(\Rightarrow2x\left(x-2\right)+3\left(x-2\right)=0\Rightarrow\left(x-2\right)\left(2x+3\right)=0\Rightarrow\left[{}\begin{matrix}x=2\\x=-\dfrac{3}{2}\end{matrix}\right.\)

Answer 2

2x(x-2)+3(x-2)=0

(x-2)(2x+3)=0

x-2=0 hay 2x+3=0

x=2 hay 2x=-3

x=2 hay x= -\(\dfrac{3}{2}\)

Answer 3

2x² - 4x + 3x - 6 = 0

( x - 2 ) ( 2x + 3 ) = 0

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

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

Answer 4

\(2x^2-4x+3x-6=0\Leftrightarrow2x^2-x-6=0\Leftrightarrow\left[{}\begin{matrix}x=2\\x=\dfrac{-3}{2}\end{matrix}\right.\)