Question

Tìm x:

4x(x - 2) + 3x - 6 = 0

Answer 1

\(4x\left(x-2\right)+3x-6=0\\ \Rightarrow4x\left(x-2\right)+3\left(x-2\right)=0\\ \Rightarrow\left(x-2\right)\left(4x+3\right)=0\\ \Rightarrow\left[{}\begin{matrix}x-2=0\\4x+3=0\end{matrix}\right.\\ \Rightarrow\left[{}\begin{matrix}x=2\\x=-\dfrac{3}{4}\end{matrix}\right.\)

Answer 2

4x(x-2)+3(x-2)=0

*TH1:                    *TH2

x-2=0                      4x+3=0

=>x=2                     x=-3/4