9x2+72x=0

Simple and best practice solution for 9x2+72x=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 9x2+72x=0 equation: 



9x^2+72x=0

a = 9; b = 72; c = 0;
Δ = b2-4ac
Δ = 722-4·9·0
Δ = 5184
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{5184}=72$


$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(72)-72}{2*9}=\frac{-144}{18}
=-8
$


$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(72)+72}{2*9}=\frac{0}{18}
=0
$

See similar equations:

| 2x-4x+2=24 | | 8k=3k+15 | | (x-8)=11 | | u/3—-3=6 | | 17x+42=8 | | 2(6+x)=13+2x | | 5(20)=3y-1 | | u—-3=6 | | -6x+18=-2-4x | | 8=-b/3 | | -8+9=u | | X=x+14=x+2(7x) | | -2(-6+5a)-3a=-a+12 | | 21x-1=16x-8=55 | | 8x=5.3333 | | 12-15x=2-15x | | 15-4(x+3=19 | | 3(x+2)=3x-91 | | 3x^2+15x=0  | | 0.6y=21 | | -3u+5=14 | | 5.1x+3=3+2x | | -5a^2+33a+56=0 | | -14x+30=44 | | 3/14=n/14 | | z/2–-9=13 | | 21-2x=10+9x | | 37x=55 | | 5x-18=47 | | F(-3)=-9x+6 | | -22=4(y-2)-6y | | (R)=-0.01x^2+1000x |

Equations solver categories