x^2=4x^2-36x+81

Simple and best practice solution for x^2=4x^2-36x+81 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=4x^2-36x+81 equation:


Simplifying
x2 = 4x2 + -36x + 81

Reorder the terms:
x2 = 81 + -36x + 4x2

Solving
x2 = 81 + -36x + 4x2

Solving for variable 'x'.

Reorder the terms:
-81 + 36x + x2 + -4x2 = 81 + -36x + 4x2 + -81 + 36x + -4x2

Combine like terms: x2 + -4x2 = -3x2
-81 + 36x + -3x2 = 81 + -36x + 4x2 + -81 + 36x + -4x2

Reorder the terms:
-81 + 36x + -3x2 = 81 + -81 + -36x + 36x + 4x2 + -4x2

Combine like terms: 81 + -81 = 0
-81 + 36x + -3x2 = 0 + -36x + 36x + 4x2 + -4x2
-81 + 36x + -3x2 = -36x + 36x + 4x2 + -4x2

Combine like terms: -36x + 36x = 0
-81 + 36x + -3x2 = 0 + 4x2 + -4x2
-81 + 36x + -3x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
-81 + 36x + -3x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-27 + 12x + -1x2) = 0

Factor a trinomial.
3((-9 + x)(3 + -1x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-9 + x)' equal to zero and attempt to solve: Simplifying -9 + x = 0 Solving -9 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = 0 + 9 Combine like terms: -9 + 9 = 0 0 + x = 0 + 9 x = 0 + 9 Combine like terms: 0 + 9 = 9 x = 9 Simplifying x = 9

Subproblem 2

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 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 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Solution

x = {9, 3}

See similar equations:

| X+52=x+47 | | 4(3+x)-x=6(x+2) | | -n-9/5=6 | | 4(g-3)=6(g+4) | | 13=d-2 | | 20x-50=-80 | | y=-3cos(3x) | | 2+3x+-x-3-1-x= | | 10+3v=19 | | 0=x^2+4-396 | | 2x/4.5=22.5/x | | 4x-4=5x+13 | | 20-4w=16 | | 5v=-50 | | q+21=8q | | 16=4v+4 | | 6x+25=5 | | 6p=2p+48 | | 7+2u=19 | | -12=-7+r | | 2x^2+4x-13=0 | | 4/1014/35 | | 4(x+28)-3(-x+7)=0 | | w+45=2w+40 | | 9=z/7 | | -(y+3)+4(y+5)=-4 | | 5x+20y=5000 | | 8-2j=-6 | | (x+10)(x-6)=36 | | 0.6(-7-1.2x)= | | Y=50(1.75)t | | 3.7-15.9=2.97 |

Equations solver categories