Question

tìm x biết : 2x²+x=0

Answer 1

x=0

Answer 2

x=0; x=-1/2

Answer 3

x = 0

Answer 4

\(2x^2+x=0\)

\(\Rightarrow x\left(2x+1\right)=0\)

\(\Rightarrow x=0\text{hoặc}2x+1=0\Rightarrow x=\dfrac{-1}{2}\)

Answer 5

2x²+x=o
x(2x+1)=0
TH1 : x=0
TH2 : 2x+1=0 
             2x=-1
          x=-1/2
  vậy x∈{0;-1/2}