4x^2+x+75=180

Solution for 4x^2+x+75=180 equation:

4x^2+x+75=180

We move all terms to the left:

4x^2+x+75-(180)=0

We add all the numbers together, and all the variables

4x^2+x-105=0

a = 4; b = 1; c = -105;
Δ = b2-4ac
Δ = 12-4·4·(-105)
Δ = 1681
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{1681}=41$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(1)-41}{2*4}=\frac{-42}{8}
=-5+1/4
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(1)+41}{2*4}=\frac{40}{8}
=5
$