(x+2)2+(2x-1)2=81

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Solution for (x+2)2+(2x-1)2=81 equation:


Simplifying
(x + 2) * 2 + (2x + -1) * 2 = 81

Reorder the terms:
(2 + x) * 2 + (2x + -1) * 2 = 81

Reorder the terms for easier multiplication:
2(2 + x) + (2x + -1) * 2 = 81
(2 * 2 + x * 2) + (2x + -1) * 2 = 81
(4 + 2x) + (2x + -1) * 2 = 81

Reorder the terms:
4 + 2x + (-1 + 2x) * 2 = 81

Reorder the terms for easier multiplication:
4 + 2x + 2(-1 + 2x) = 81
4 + 2x + (-1 * 2 + 2x * 2) = 81
4 + 2x + (-2 + 4x) = 81

Reorder the terms:
4 + -2 + 2x + 4x = 81

Combine like terms: 4 + -2 = 2
2 + 2x + 4x = 81

Combine like terms: 2x + 4x = 6x
2 + 6x = 81

Solving
2 + 6x = 81

Solving for variable 'x'.

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

Add '-2' to each side of the equation.
2 + -2 + 6x = 81 + -2

Combine like terms: 2 + -2 = 0
0 + 6x = 81 + -2
6x = 81 + -2

Combine like terms: 81 + -2 = 79
6x = 79

Divide each side by '6'.
x = 13.16666667

Simplifying
x = 13.16666667

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