3x=x^2-18

Simple and best practice solution for 3x=x^2-18 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 3x=x^2-18 equation:


Simplifying
3x = x2 + -18

Reorder the terms:
3x = -18 + x2

Solving
3x = -18 + x2

Solving for variable 'x'.

Reorder the terms:
18 + 3x + -1x2 = -18 + x2 + 18 + -1x2

Reorder the terms:
18 + 3x + -1x2 = -18 + 18 + x2 + -1x2

Combine like terms: -18 + 18 = 0
18 + 3x + -1x2 = 0 + x2 + -1x2
18 + 3x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
18 + 3x + -1x2 = 0

Factor a trinomial.
(6 + -1x)(3 + x) = 0

Subproblem 1

Set the factor '(6 + -1x)' equal to zero and attempt to solve: Simplifying 6 + -1x = 0 Solving 6 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + -1x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -1x = 0 + -6 -1x = 0 + -6 Combine like terms: 0 + -6 = -6 -1x = -6 Divide each side by '-1'. x = 6 Simplifying x = 6

Subproblem 2

Set the factor '(3 + x)' equal to zero and attempt to solve: Simplifying 3 + x = 0 Solving 3 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + x = 0 + -3 x = 0 + -3 Combine like terms: 0 + -3 = -3 x = -3 Simplifying x = -3

Solution

x = {6, -3}

See similar equations:

| -30+18p=18p-30 | | 3n-3=17 | | -2/5x-9=-13 | | 11,260+(-5210)= | | 14ln(10)-14ln(2)=28ln(4) | | 14-7x=32-14x | | X^2+y^2-4x-10y=20 | | 8x+11x=98+x | | 4x+10=3(x-10)-2 | | 180=12g | | 4(-6-6x)-x=6x-7(6+4x) | | 4(-6-6x)-x=6x-7(6+4x) | | -8-8x-25=48x+48 | | -8-8x-25=48x+48 | | 180-q=121 | | -649+1535= | | k/12+9=30 | | -0.663/0.013= | | 10*x^2+20*x+10=0 | | 2x-8y=-4 | | -8-8x-200=48x+24 | | -8-8x-200=48x+224 | | (c^2)-8c=0 | | 800x+4=24 | | x=x^2+25 | | -8-1(8x-5²)=6(8x+2³) | | x=x*2+25 | | x/3=215 | | x/4=12/16 | | 9x-30x+25=19 | | -g=4(6-2x) | | 5x-3(3-3x)=3x+8(2x+7) |

Equations solver categories