x^2+18x+(-x^2-18x)=0

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Solution for x^2+18x+(-x^2-18x)=0 equation: 


Simplifying
x2 + 18x + (-1x2 + -18x) = 0

Reorder the terms:
x2 + 18x + (-18x + -1x2) = 0

Remove parenthesis around (-18x + -1x2)
x2 + 18x + -18x + -1x2 = 0

Reorder the terms:
18x + -18x + x2 + -1x2 = 0

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

Combine like terms: x2 + -1x2 = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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