2n2+11n+9=0

Simple and best practice solution for 2n2+11n+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 2n2+11n+9=0 equation: 



2n^2+11n+9=0

a = 2; b = 11; c = +9;
Δ = b2-4ac
Δ = 112-4·2·9
Δ = 49
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{49}=7$


$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(11)-7}{2*2}=\frac{-18}{4}
=-4+1/2
$


$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(11)+7}{2*2}=\frac{-4}{4}
=-1
$

See similar equations:

| 14-6=15+5x | | 2,100=3x+x | | t+4-9=-7 | | -1/3a=0 | | x=3(-8) | | 6p2-12p+6=0 | | 6h+50-h-57=-3h+13 | | 10+5x=16+3x | | z-32=0 | | 6m^2+11m-95=0 | | -x+9+5x=37 | | x3-1.93=-4.1 | | 21/7/(15a)=5/14/(.8) | | (9.9+3.6)/0.25;x=3.6 | | 4n2-9=0 | | 3/4(d+2)=-1 | | 2,100=2x+x | | 6h+50-h-57=-3h+2h+5h+6h | | 4r2-100=0 | | 212+48x=380 | | 2,100=2x | | 10(-15y+155)+y=40 | | -8m+9=-1-6m-10 | | 5k2+12k-108=0 | | 5t^2+23t+10=0 | | 9/4x+7=½-x | | 2(-x-1)+5=x+10 | | 24x+8-4x+1=9 | | 3(x+20)+44=180 | | 2n2+n-55=0 | | X-4=3x*8 | | 5.2-3.05x=1+6.15x |

Equations solver categories