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

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


Simplifying
x2 + x2 + 18x + 81 = 2x2 + -18x + 81

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

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

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

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

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

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

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

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

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

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

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

Solving
18x = -18x

Solving for variable 'x'.

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

Add '18x' to each side of the equation.
18x + 18x = -18x + 18x

Combine like terms: 18x + 18x = 36x
36x = -18x + 18x

Combine like terms: -18x + 18x = 0
36x = 0

Divide each side by '36'.
x = 0

Simplifying
x = 0

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