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

Solution for 30+x^2-18x+81=x^2 equation:

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

Reorder the terms:
30 + 81 + -18x + x2 = x2

Combine like terms: 30 + 81 = 111
111 + -18x + x2 = x2

Add '-1x2' to each side of the equation.
111 + -18x + x2 + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
111 + -18x + 0 = x2 + -1x2
111 + -18x = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
111 + -18x = 0

Solving
111 + -18x = 0

Solving for variable 'x'.

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

Add '-111' to each side of the equation.
111 + -111 + -18x = 0 + -111

Combine like terms: 111 + -111 = 0
0 + -18x = 0 + -111
-18x = 0 + -111

Combine like terms: 0 + -111 = -111
-18x = -111

Divide each side by '-18'.
x = 6.166666667

Simplifying
x = 6.166666667