2x^2+3x-10x=66

Solution for 2x^2+3x-10x=66 equation:

2x^2+3x-10x=66

We move all terms to the left:

2x^2+3x-10x-(66)=0

We add all the numbers together, and all the variables

2x^2-7x-66=0

a = 2; b = -7; c = -66;
Δ = b2-4ac
Δ = -72-4·2·(-66)
Δ = 577
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{-(-7)-\sqrt{577}}{2*2}=\frac{7-\sqrt{577}}{4}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-7)+\sqrt{577}}{2*2}=\frac{7+\sqrt{577}}{4}
$