x^2+x^2+18x+81=4x^2-36x+81

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Solution for x^2+x^2+18x+81=4x^2-36x+81 equation:


Simplifying
x2 + x2 + 18x + 81 = 4x2 + -36x + 81

Reorder the terms:
81 + 18x + x2 + x2 = 4x2 + -36x + 81

Combine like terms: x2 + x2 = 2x2
81 + 18x + 2x2 = 4x2 + -36x + 81

Reorder the terms:
81 + 18x + 2x2 = 81 + -36x + 4x2

Add '-81' to each side of the equation.
81 + 18x + -81 + 2x2 = 81 + -36x + -81 + 4x2

Reorder the terms:
81 + -81 + 18x + 2x2 = 81 + -36x + -81 + 4x2

Combine like terms: 81 + -81 = 0
0 + 18x + 2x2 = 81 + -36x + -81 + 4x2
18x + 2x2 = 81 + -36x + -81 + 4x2

Reorder the terms:
18x + 2x2 = 81 + -81 + -36x + 4x2

Combine like terms: 81 + -81 = 0
18x + 2x2 = 0 + -36x + 4x2
18x + 2x2 = -36x + 4x2

Solving
18x + 2x2 = -36x + 4x2

Solving for variable 'x'.

Reorder the terms:
18x + 36x + 2x2 + -4x2 = -36x + 4x2 + 36x + -4x2

Combine like terms: 18x + 36x = 54x
54x + 2x2 + -4x2 = -36x + 4x2 + 36x + -4x2

Combine like terms: 2x2 + -4x2 = -2x2
54x + -2x2 = -36x + 4x2 + 36x + -4x2

Reorder the terms:
54x + -2x2 = -36x + 36x + 4x2 + -4x2

Combine like terms: -36x + 36x = 0
54x + -2x2 = 0 + 4x2 + -4x2
54x + -2x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
54x + -2x2 = 0

Factor out the Greatest Common Factor (GCF), '2x'.
2x(27 + -1x) = 0

Ignore the factor 2.

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

Set the factor '(27 + -1x)' equal to zero and attempt to solve: Simplifying 27 + -1x = 0 Solving 27 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-27' to each side of the equation. 27 + -27 + -1x = 0 + -27 Combine like terms: 27 + -27 = 0 0 + -1x = 0 + -27 -1x = 0 + -27 Combine like terms: 0 + -27 = -27 -1x = -27 Divide each side by '-1'. x = 27 Simplifying x = 27

Solution

x = {0, 27}

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