2x(3x+8)=5x^2-8x

Solution for 2x(3x+8)=5x^2-8x equation:

2x(3x+8)=5x^2-8x

We move all terms to the left:

2x(3x+8)-(5x^2-8x)=0

We multiply parentheses

6x^2+16x-(5x^2-8x)=0

We get rid of parentheses

6x^2-5x^2+16x+8x=0

We add all the numbers together, and all the variables

x^2+24x=0

a = 1; b = 24; c = 0;
Δ = b2-4ac
Δ = 242-4·1·0
Δ = 576
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{576}=24$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(24)-24}{2*1}=\frac{-48}{2}
=-24
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(24)+24}{2*1}=\frac{0}{2}
=0
$