2x^2+x=135

Solution for 2x^2+x=135 equation:

2x^2+x=135

We move all terms to the left:

2x^2+x-(135)=0

a = 2; b = 1; c = -135;
Δ = b2-4ac
Δ = 12-4·2·(-135)
Δ = 1081
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(1)-\sqrt{1081}}{2*2}=\frac{-1-\sqrt{1081}}{4}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(1)+\sqrt{1081}}{2*2}=\frac{-1+\sqrt{1081}}{4}
$