s2+18s+81=0

Simple and best practice solution for s2+18s+81=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 s2+18s+81=0 equation: 



s2+18s+81=0

We add all the numbers together, and all the variables

s^2+18s+81=0

a = 1; b = 18; c = +81;
Δ = b2-4ac
Δ = 182-4·1·81
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$s=\frac{-b}{2a}=\frac{-18}{2}=-9$

See similar equations:

| 1/2(11x-60)2x=x | | 1/2(11x-6)-2x=x | | 5x-7x-11=6x-9x-20 | | 3n-3+1n=-11 | | ((-2x^2-5x+12)/(3x^2-x-4))/(1/2+(x/(3x-4)))=(-4x/2x+4) | | -5x^2-6x+2=0 | | 3y+7=9y= | | -5=-1n-4+2n | | X+3x-10=9+x+2x | | 8k+k+4=50-1 | | 5+14a=98-5 | | 3n+4=66 | | 6-y=-3. | | 4n(-10)=2n(8) | | -4+k=5 | | 98x+12=100x+8 | | 0.3(0.7)=x | | -3+m=5.1. | | x^2-2x=0;x-2=0 | | d-5=-26 | | 24=b+9 | | a-2=18 | | -3(x-3)+3x=-(x-5)+4 | | X(2x)=162 | | 8m+6=2(4m+3) | | 28x-38=10x+36 | | 24/12=a/6 | | 3n+3n+5=29 | | 10(2x-2)=60 | | -1.7+x=5 | | x+4×=16x-352 | | 10x-3=8+23 |

Equations solver categories