x^2-18X+81=15

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Solution for x^2-18X+81=15 equation: 


Simplifying
x2 + -18X + 81 = 15

Reorder the terms:
81 + -18X + x2 = 15

Solving
81 + -18X + x2 = 15

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 + -18X + -81 + x2 = 15 + -81

Reorder the terms:
81 + -81 + -18X + x2 = 15 + -81

Combine like terms: 81 + -81 = 0
0 + -18X + x2 = 15 + -81
-18X + x2 = 15 + -81

Combine like terms: 15 + -81 = -66
-18X + x2 = -66

Add '-1x2' to each side of the equation.
-18X + x2 + -1x2 = -66 + -1x2

Combine like terms: x2 + -1x2 = 0
-18X + 0 = -66 + -1x2
-18X = -66 + -1x2

Divide each side by '-18'.
X = 3.666666667 + 0.05555555556x2

Simplifying
X = 3.666666667 + 0.05555555556x2

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