X^2-26X+169=12

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Solution for X^2-26X+169=12 equation:


Simplifying
X2 + -26X + 169 = 12

Reorder the terms:
169 + -26X + X2 = 12

Solving
169 + -26X + X2 = 12

Solving for variable 'X'.

Reorder the terms:
169 + -12 + -26X + X2 = 12 + -12

Combine like terms: 169 + -12 = 157
157 + -26X + X2 = 12 + -12

Combine like terms: 12 + -12 = 0
157 + -26X + X2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-157' to each side of the equation.
157 + -26X + -157 + X2 = 0 + -157

Reorder the terms:
157 + -157 + -26X + X2 = 0 + -157

Combine like terms: 157 + -157 = 0
0 + -26X + X2 = 0 + -157
-26X + X2 = 0 + -157

Combine like terms: 0 + -157 = -157
-26X + X2 = -157

The X term is -26X.  Take half its coefficient (-13).
Square it (169) and add it to both sides.

Add '169' to each side of the equation.
-26X + 169 + X2 = -157 + 169

Reorder the terms:
169 + -26X + X2 = -157 + 169

Combine like terms: -157 + 169 = 12
169 + -26X + X2 = 12

Factor a perfect square on the left side:
(X + -13)(X + -13) = 12

Calculate the square root of the right side: 3.464101615

Break this problem into two subproblems by setting 
(X + -13) equal to 3.464101615 and -3.464101615.

Subproblem 1

X + -13 = 3.464101615 Simplifying X + -13 = 3.464101615 Reorder the terms: -13 + X = 3.464101615 Solving -13 + X = 3.464101615 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '13' to each side of the equation. -13 + 13 + X = 3.464101615 + 13 Combine like terms: -13 + 13 = 0 0 + X = 3.464101615 + 13 X = 3.464101615 + 13 Combine like terms: 3.464101615 + 13 = 16.464101615 X = 16.464101615 Simplifying X = 16.464101615

Subproblem 2

X + -13 = -3.464101615 Simplifying X + -13 = -3.464101615 Reorder the terms: -13 + X = -3.464101615 Solving -13 + X = -3.464101615 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '13' to each side of the equation. -13 + 13 + X = -3.464101615 + 13 Combine like terms: -13 + 13 = 0 0 + X = -3.464101615 + 13 X = -3.464101615 + 13 Combine like terms: -3.464101615 + 13 = 9.535898385 X = 9.535898385 Simplifying X = 9.535898385

Solution

The solution to the problem is based on the solutions from the subproblems. X = {16.464101615, 9.535898385}

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