81+x(x)=18(18)

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Solution for 81+x(x)=18(18) equation:


Simplifying
81 + x(x) = 18(18)

Multiply x * x
81 + x2 = 18(18)

Multiply 18 * 18
81 + x2 = 324

Solving
81 + x2 = 324

Solving for variable 'x'.

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

Add '-81' to each side of the equation.
81 + -81 + x2 = 324 + -81

Combine like terms: 81 + -81 = 0
0 + x2 = 324 + -81
x2 = 324 + -81

Combine like terms: 324 + -81 = 243
x2 = 243

Simplifying
x2 = 243

Take the square root of each side:
x = {-15.588457268, 15.588457268}

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