13x2-13x-15=0

Simple and best practice solution for 13x2-13x-15=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 13x2-13x-15=0 equation:



13x^2-13x-15=0
a = 13; b = -13; c = -15;
Δ = b2-4ac
Δ = -132-4·13·(-15)
Δ = 949
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{-(-13)-\sqrt{949}}{2*13}=\frac{13-\sqrt{949}}{26} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-13)+\sqrt{949}}{2*13}=\frac{13+\sqrt{949}}{26} $

See similar equations:

| 3x2+5x-4=0 | | 7x2-4x-5=0 | | 9x2+12x+1=0 | | 10x2-19x-7=0 | | 15x2+12x-8=0 | | 17x2+11x+15=0 | | 2x2+17x-16=0 | | 4x2-12x-6=0 | | 13x2+2x-8=0 | | 20x2-2x+4=0 | | 6(2x+3=42 | | 9/17=36/x | | w+2/4=5 | | 10n+2=43n | | x-25=4x+10=180 | | 8x-2=9x-14=180 | | -(5n-5)+10n=2(5n+40) | | 40x-5x^-0.5=0 | | 5.3=v/7+12.2 | | 4x+(5+(21x-13))=76 | | x-46=82 | | 8x+6+4x+38=43 | | 4w-4/5=-3/2w+2/5 | | 6x-48+4x+38=90 | | 34-v=22 | | 6.1-74.3-2d=11.8 | | (2i+1)-4=136 | | m-m=2 | | 1+1*b+1*b+1=56 | | 2b+b+1=56 | | 9x-35+6x-10=180 | | 3(x+8)+4x=2x-6 |

Equations solver categories