x^2+3x+k=0

Simple and best practice solution for x^2+3x+k=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 x^2+3x+k=0 equation: 


Simplifying
x2 + 3x + k = 0

Reorder the terms:
k + 3x + x2 = 0

Solving
k + 3x + x2 = 0

Solving for variable 'k'.

Move all terms containing k to the left, all other terms to the right.

Add '-3x' to each side of the equation.
k + 3x + -3x + x2 = 0 + -3x

Combine like terms: 3x + -3x = 0
k + 0 + x2 = 0 + -3x
k + x2 = 0 + -3x
Remove the zero:
k + x2 = -3x

Add '-1x2' to each side of the equation.
k + x2 + -1x2 = -3x + -1x2

Combine like terms: x2 + -1x2 = 0
k + 0 = -3x + -1x2
k = -3x + -1x2

Simplifying
k = -3x + -1x2

See similar equations:

| (x^2+16)(x^2+81)=13x | | 9u=4 | | 3e=36 | | 7j=84 | | 2v=34 | | 86d+34=56836 | | 30u=180 | | 26x+21=23x+-9 | | (2k+2)x^2+(4-4k)x=2-k | | 9y=90 | | 2k=48 | | 8x+2=6x+34 | | 2.8q-3.5-2.7q=-0.9q-1.2 | | 9y+5=15y-1 | | 15p=45 | | 5r=15 | | 2w=30 | | 10x+6-3=9x-3 | | 7(-1.8)+13=2(-1.8)+4 | | 3z=39 | | 3z=3 | | 9q=18 | | 4d=8 | | 8y+4=7y-7 | | 7z+13=2z+4 | | 8m+9=7m+8 | | 7(2.75)-3=3(2.75)+8 | | x+2=2+x | | 1-2P=4P+P | | 3x(3-2x)=2(5-3x^2)+4x | | 7p-3=3p+8 | | (x-3)(x-3)=13 |

Equations solver categories