2x2+5x=2x+35

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Solution for 2x2+5x=2x+35 equation:



2x^2+5x=2x+35
We move all terms to the left:
2x^2+5x-(2x+35)=0
We get rid of parentheses
2x^2+5x-2x-35=0
We add all the numbers together, and all the variables
2x^2+3x-35=0
a = 2; b = 3; c = -35;
Δ = b2-4ac
Δ = 32-4·2·(-35)
Δ = 289
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{289}=17$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(3)-17}{2*2}=\frac{-20}{4} =-5 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(3)+17}{2*2}=\frac{14}{4} =3+1/2 $

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