375=(2x-5)(x)

Solution for 375=(2x-5)(x) equation:

375=(2x-5)(x)

We move all terms to the left:

375-((2x-5)(x))=0


We calculate terms in parentheses: -((2x-5)x), so:

(2x-5)x

We multiply parentheses

2x^2-5x

Back to the equation:

-(2x^2-5x)


We get rid of parentheses

-2x^2+5x+375=0

a = -2; b = 5; c = +375;
Δ = b2-4ac
Δ = 52-4·(-2)·375
Δ = 3025
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{3025}=55$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(5)-55}{2*-2}=\frac{-60}{-4}
=+15
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(5)+55}{2*-2}=\frac{50}{-4}
=-12+1/2
$