d2+6d+9=0

Simple and best practice solution for d2+6d+9=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 d2+6d+9=0 equation: 



d2+6d+9=0

We add all the numbers together, and all the variables

d^2+6d+9=0

a = 1; b = 6; c = +9;
Δ = b2-4ac
Δ = 62-4·1·9
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$d=\frac{-b}{2a}=\frac{-6}{2}=-3$

See similar equations:

| 4x+5=5- | | 0.6(1.5x+1.2)=0.8(0.3x-0.35) | | S=4200(1+4.5x11) | | –9x –18=–63 | | 0.6(1.5x+1.2)=0.8(0.3x-0.35 | | k/7.2+68.2=47.1 | | 9(x-3=)=45 | | 6z+12=180 | | 9y+36=180 | | -7.5x+0.36=2.64 | | 3^3x-4=9x | | -7.5x+0.71=2.29 | | 3x-5x-3=0 | | 0=30-(1.7*d) | | r-19.5=-6.4 | | 67.1=29.7=-0.2w | | x/11=4x/5-39 | | 3x3/5=7 | | c/(0.2)=7 | | -3x+8=96+5x | | 5(a-10)=70 | | 3b-48=2b-48 | | 9z-15=4z+10 | | 5v=11+3v,2v+7v=3 | | 36c-3=23 | | 6p+1=73 | | 4y-17-4y=0 | | 7a-11=5-a | | -1x^2+3x+1=2x^2-3X+2 | | n*7-35=n*5-9 | | 4s-13=s+17 | | 480+24(h-40)=768 |

Equations solver categories