3y2+9y=0

Simple and best practice solution for 3y2+9y=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 3y2+9y=0 equation: 



3y^2+9y=0

a = 3; b = 9; c = 0;
Δ = b2-4ac
Δ = 92-4·3·0
Δ = 81
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{81}=9$


$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(9)-9}{2*3}=\frac{-18}{6}
=-3
$


$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(9)+9}{2*3}=\frac{0}{6}
=0
$

See similar equations:

| 3a-5+2a=32 | | 69.5=1.05(2.38+3.84+2.92)h | | –18h+13h=10 | | -6n-38=4(1+2n) | | (2x+5)+57=90 | | 3(2x+3)+2=20 | | X^2-5x+5=19 | | 35-7x=1+6(5x-6)  | | (6y-51)+132=180 | | 3(2x+4)-3=2x(-5x-4) | | 4+4n+8=0 | | 2n+3n=-20 | | .5(x-9)=16 | | 2+10r=122 | | 4m-35=-5(1+5m)-m | | 10p-5=-155 | | 287/8x42=0 | | 5y-4-2y+3=0 | | 9n^2+9n-10=0 | | 28=–9v–8+5v | | 6x^2+11x+30=0 | | X2-11x=-10x+110 | | -27-x=-3(6x-8) | | 28=9v–8+5v | | -p=p+9/2 | | (3/8)n+1=-1 | | 4(2x-)-2x=-10 | | -49=7(4k+9) | | 1/2(x+4=1/2+1 | | 3x1=8x-24 | | 6y-51=33 | | 3(t+2)+1=10 |

Equations solver categories