Question

Giải pt

\(2x^2+x=1\)

 

Answer 1

\(\Leftrightarrow2x^2+x-1=0\)

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

=>x=-1/2 hoặc x=1

Answer 2

x = \(\dfrac{1}{2}\)hoặc x = 1

Answer 3

 

2 x2+x=1

2x2+x-1=0

\(\Rightarrow\)\(\left\{{}\begin{matrix}x_1=\dfrac{1}{2}\\x_2=-1\end{matrix}\right.\)

 

Answer 4

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

=>x=-1/2 hoặc x=1

tik nha