x2+0.25x-9=0

Simple and best practice solution for x2+0.25x-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 x2+0.25x-9=0 equation:



x2+0.25x-9=0
We add all the numbers together, and all the variables
x^2+0.25x-9=0
a = 1; b = 0.25; c = -9;
Δ = b2-4ac
Δ = 0.252-4·1·(-9)
Δ = 36.0625
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0.25)-\sqrt{36.0625}}{2*1}=\frac{-0.25-\sqrt{36.0625}}{2} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0.25)+\sqrt{36.0625}}{2*1}=\frac{-0.25+\sqrt{36.0625}}{2} $

See similar equations:

| 15x+20-10x-9=25 | | (x)(3x-8)=1675 | | 2(x-2)(x-4)=132 | | (4/d-2)+(3d/d-2)=(8/d^2-4d+4) | | x+1½=2 | | h(h+10)-28=0 | | 27x-25=5(5x-4)+2x-5 | | 3/10+1/6=m | | 2x-8=2(x+5) | | y=12-1.4 | | 0.04(y-8)+0.06y=0.08y-0.5 | | 3d^2-10d=16 | | 2^(-x+2)=9^-4x | | 9^z-2=38 | | -8n=-4,75 | | x(3/4)=8/27 | | 20=3.14x | | 2x+2(x+4)=44 | | (4/x)+(2/5)=(6/x) | | 36^x=216^3x | | 64/5=r | | H=6t^2+22t | | r/8=8/5 | | 4(x-3)/2=2(x+2)/6 | | 12(r-2)=12 | | 7s-2=12 | | 5x^2-2x-19=-3 | | {x|3x+5=16} | | x2+12x–20=0 | | 21=7-5p-6 | | (1/3)x=6/9 | | 8/7=-4y |

Equations solver categories