x2-3x+9=

Simple and best practice solution for x2-3x+9= 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 x2-3x+9= equation:



x2-3x+9=
We move all terms to the left:
x2-3x+9-()=0
We add all the numbers together, and all the variables
x^2-3x=0
a = 1; b = -3; c = 0;
Δ = b2-4ac
Δ = -32-4·1·0
Δ = 9
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{9}=3$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-3)-3}{2*1}=\frac{0}{2} =0 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-3)+3}{2*1}=\frac{6}{2} =3 $

See similar equations:

| 2(x/2)=14 | | 2(4x-7)=4 | | 3x^2/9^2=27^-1 | | 3x-4=x-10/3 | | 5(x-15)=25 | | 2x+11=31-8x | | 16=2x-5 | | 5.75=x | | 2x=x+52.5 | | 5x-4=9+x | | 15x-21-18x+22=32x-52-17 | | -2x-12=5(5x+3) | | 15=(15x) | | 2x-3*x+1=X | | A=3.75+1.75b | | 3d*3-5=D | | 3d-5=D | | 0m=0 | | 9x+5=4(x-2+8) | | 5-30-25=c | | 3(u-8)-4=-4(-7u+9)-9u | | 3x-15+x+5=180° | | 28+h=316 | | y+(y*5/100)=105 | | -20=-4x+2x | | 2x+9=3x/2 | | 4c+3=4c+2 | | -11y-4=7 | | 86-v=231 | | 9v-8=5(v-4) | | 36=3(y+4)-7y | | 5x+2=20-4x |

Equations solver categories