13x^2+3x-4=-4

Solution for 13x^2+3x-4=-4 equation:

13x^2+3x-4=-4

We move all terms to the left:

13x^2+3x-4-(-4)=0

We add all the numbers together, and all the variables

13x^2+3x=0

a = 13; b = 3; c = 0;
Δ = b2-4ac
Δ = 32-4·13·0
Δ = 9
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{9}=3$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(3)-3}{2*13}=\frac{-6}{26}
=-3/13
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(3)+3}{2*13}=\frac{0}{26}
=0
$