2k2+6k-80=0

Simple and best practice solution for 2k2+6k-80=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 2k2+6k-80=0 equation: 



2k^2+6k-80=0

a = 2; b = 6; c = -80;
Δ = b2-4ac
Δ = 62-4·2·(-80)
Δ = 676
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$k_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$k_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{676}=26$


$k_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(6)-26}{2*2}=\frac{-32}{4}
=-8
$


$k_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(6)+26}{2*2}=\frac{20}{4}
=5
$

See similar equations:

| 57+4x+1=0 | | 4a+8=-2 | | 57+4x+1=360 | | 57+4x+1=180 | | 30=5(-4-2y) | | 4(7x+9)=204 | | 3(x-2)+x=4x-60 | | -3(5y-8)=-36 | | 2(-x+7)=x+29 | | 87+4x+1=180 | | 6(2r+3)=42 | | 3x-1=×+11 | | 15-4r-22=25 | | 2x²+42x=24 | | 4(x+3)-7=4(x-2) | | -9/x=-15 | | 5y-7+3y=-31 | | 7y-4-2y+6=180 | | 3x-6=4x-12=180 | | 4(2x+3)-7=6x-21 | | x−0.23=7.12 | | 12-3x=162 | | 6(x+1=6x-2 | | -12=-2(x+3) | | 5x+8=2x² | | 4(2x–3)=4(x–2) | | 3x3.6= | | 6w-15=3w-21 | | (0.8)^n=1.6 | | 3y+2=5y+10 | | 5x+20+3x+18=-3(-6-4x) | | 8h=6h-19 |

Equations solver categories