2xsqur +x -4 solve by complete squar method

2x^2 + x - 4
First we divide the whole equation by 2
So, 2x^2÷2 + x÷2 - 4÷2
= x^2 + x/2 - 2
Now , we have find the b
{ 2ab = x
2×x/2×b= x
b = 1 }

X^2 + x/2 + (1^2) -(1^2) - 2 = 0
(x+2)^2 - 1 -2 = 0
(x+2)^2 - 3 = 0
(x+2)^2 = 3
(X+2) = under root +- 3
x = under root 3 - 2
x = -under root 3 - 2
Roots are under root 3 + 2, - under root 3 - 2

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