x^2-14x=17

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Solution for x^2-14x=17 equation:


Simplifying
x2 + -14x = 17

Reorder the terms:
-14x + x2 = 17

Solving
-14x + x2 = 17

Solving for variable 'x'.

Reorder the terms:
-17 + -14x + x2 = 17 + -17

Combine like terms: 17 + -17 = 0
-17 + -14x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '17' to each side of the equation.
-17 + -14x + 17 + x2 = 0 + 17

Reorder the terms:
-17 + 17 + -14x + x2 = 0 + 17

Combine like terms: -17 + 17 = 0
0 + -14x + x2 = 0 + 17
-14x + x2 = 0 + 17

Combine like terms: 0 + 17 = 17
-14x + x2 = 17

The x term is -14x.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14x + 49 + x2 = 17 + 49

Reorder the terms:
49 + -14x + x2 = 17 + 49

Combine like terms: 17 + 49 = 66
49 + -14x + x2 = 66

Factor a perfect square on the left side:
(x + -7)(x + -7) = 66

Calculate the square root of the right side: 8.124038405

Break this problem into two subproblems by setting 
(x + -7) equal to 8.124038405 and -8.124038405.

Subproblem 1

x + -7 = 8.124038405 Simplifying x + -7 = 8.124038405 Reorder the terms: -7 + x = 8.124038405 Solving -7 + x = 8.124038405 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = 8.124038405 + 7 Combine like terms: -7 + 7 = 0 0 + x = 8.124038405 + 7 x = 8.124038405 + 7 Combine like terms: 8.124038405 + 7 = 15.124038405 x = 15.124038405 Simplifying x = 15.124038405

Subproblem 2

x + -7 = -8.124038405 Simplifying x + -7 = -8.124038405 Reorder the terms: -7 + x = -8.124038405 Solving -7 + x = -8.124038405 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = -8.124038405 + 7 Combine like terms: -7 + 7 = 0 0 + x = -8.124038405 + 7 x = -8.124038405 + 7 Combine like terms: -8.124038405 + 7 = -1.124038405 x = -1.124038405 Simplifying x = -1.124038405

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.124038405, -1.124038405}

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