2n2+5n-9=0

Simple and best practice solution for 2n2+5n-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+5n-9=0 equation: 



2n^2+5n-9=0

a = 2; b = 5; c = -9;
Δ = b2-4ac
Δ = 52-4·2·(-9)
Δ = 97
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(5)-\sqrt{97}}{2*2}=\frac{-5-\sqrt{97}}{4}
$


$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(5)+\sqrt{97}}{2*2}=\frac{-5+\sqrt{97}}{4}
$

See similar equations:

| 5.3x+6.32-5=4(2x+2.3) | | 6a-8a=10 | | 4b+b+b=360° | | 3x+5-8x=4 | | 7x-11=25+3x | | 3(x-7)+3=2x-24 | | 1+4n=3n-6 | | x-5=0,25x | | 5x+4/9=4x+1/9 | | -7=-j/3-5 | | F(1/4)=4+8x | | 4x+15=x+5 | | 88-16b=16b+88 | | (x/2)=(1-x/5)=1/2 | | (6n+8)=(8n-2) | | 3x-6=x+34 | | 6n2-11=0 | | (4x+35)/2=3x | | v/7-2.4=-19.9 | | (8x.)+17=41 | | 10=2a+3a | | 4n+7=23-3n | | 7x+1-2x-15=8x+1 | | 120=4x=148 | | 3x+5+4x-3=11-2x | | x+7+2x-10=180 | | 85=7+6(5+4n) | | m+6m=14 | | 3=2e+e | | X²+16x–132=0 | | 2x+8+6x-1=73 | | -0.5y=4 |

Equations solver categories