x^2-13x+42=0.

Simple and best practice solution for x^2-13x+42=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 x^2-13x+42=0. equation: 



x^2-13x+42=0.

a = 1; b = -13; c = +42;
Δ = b2-4ac
Δ = -132-4·1·42
Δ = 1
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{1}=1$


$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-13)-1}{2*1}=\frac{12}{2}
=6
$


$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-13)+1}{2*1}=\frac{14}{2}
=7
$

See similar equations:

| z+25/7=5 | | 5(x-6)+8-3x=2(x-11) | | 24-3(a-8)=18 | | 12x=68+-26 | | y+38/4=0 | | 21/12=x/6 | | B•x=81 | | x÷7=0.2 | | x.x/60=5 | | 1/36=x/60 | | 2x+7=753x-4=75 | | (3x-5)=(2x-1) | | 14-5x=x-4 | | 2.02-g=1.02 | | r-81/5=2 | | 2(b-3.2)=9.8 | | 0.3+x/10=0.5x-0.4 | | 3k^2+5k-10=0 | | 19z-4+12z=16z-1+1413z | | 0.3+(x/10)=0.5x-0.4 | | -27=27-6u | | 4-7k+4=1-6k | | 3k^2-5k-10=1 | | 3(r+2.2)-5.9=6.1 | | 3k^2-5k-10=0 | | r-17.3=-3.4 | | 0=-2.5x+20 | | 14.95=9-j | | 8x-7=-7x-2 | | s/4+10=7 | | 1-(x-3)=1-3(-x+2) | | 7(f+1)=91 |

Equations solver categories