x^2-17x+65=0

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Solution for x^2-17x+65=0 equation:


Simplifying
x2 + -17x + 65 = 0

Reorder the terms:
65 + -17x + x2 = 0

Solving
65 + -17x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-65' to each side of the equation.
65 + -17x + -65 + x2 = 0 + -65

Reorder the terms:
65 + -65 + -17x + x2 = 0 + -65

Combine like terms: 65 + -65 = 0
0 + -17x + x2 = 0 + -65
-17x + x2 = 0 + -65

Combine like terms: 0 + -65 = -65
-17x + x2 = -65

The x term is -17x.  Take half its coefficient (-8.5).
Square it (72.25) and add it to both sides.

Add '72.25' to each side of the equation.
-17x + 72.25 + x2 = -65 + 72.25

Reorder the terms:
72.25 + -17x + x2 = -65 + 72.25

Combine like terms: -65 + 72.25 = 7.25
72.25 + -17x + x2 = 7.25

Factor a perfect square on the left side:
(x + -8.5)(x + -8.5) = 7.25

Calculate the square root of the right side: 2.692582404

Break this problem into two subproblems by setting 
(x + -8.5) equal to 2.692582404 and -2.692582404.

Subproblem 1

x + -8.5 = 2.692582404 Simplifying x + -8.5 = 2.692582404 Reorder the terms: -8.5 + x = 2.692582404 Solving -8.5 + x = 2.692582404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.5' to each side of the equation. -8.5 + 8.5 + x = 2.692582404 + 8.5 Combine like terms: -8.5 + 8.5 = 0.0 0.0 + x = 2.692582404 + 8.5 x = 2.692582404 + 8.5 Combine like terms: 2.692582404 + 8.5 = 11.192582404 x = 11.192582404 Simplifying x = 11.192582404

Subproblem 2

x + -8.5 = -2.692582404 Simplifying x + -8.5 = -2.692582404 Reorder the terms: -8.5 + x = -2.692582404 Solving -8.5 + x = -2.692582404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.5' to each side of the equation. -8.5 + 8.5 + x = -2.692582404 + 8.5 Combine like terms: -8.5 + 8.5 = 0.0 0.0 + x = -2.692582404 + 8.5 x = -2.692582404 + 8.5 Combine like terms: -2.692582404 + 8.5 = 5.807417596 x = 5.807417596 Simplifying x = 5.807417596

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.192582404, 5.807417596}

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