Question

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

Answer 1

\(\Leftrightarrow2x^2+3x-2x-3+2x-2=0\)

\(\Leftrightarrow2x^2+3x-5=0\)

=>(2x+5)(x-1)=0

=>x=-5/2 hoặc x=1

Answer 2

1

Answer 3

\(\left(x-1\right)\left(2x+3\right)+2x=2\\ \Rightarrow\left(x-1\right)\left(2x+3\right)+2x-2=0\\ \Rightarrow\left(x-1\right)\left(2x+3\right)+2\left(x-1\right)=0\\ \Rightarrow\left(x-1\right)\left(2x+3+2\right)=0\\\Rightarrow \left(x-1\right)\left(2x+5\right)=0\\ \Rightarrow\left[{}\begin{matrix}x=1\\x=-\dfrac{5}{2}\end{matrix}\right.\)

Answer 4

x=-5/2

 x=1