x^2=17x-39

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Solution for x^2=17x-39 equation:


Simplifying
x2 = 17x + -39

Reorder the terms:
x2 = -39 + 17x

Solving
x2 = -39 + 17x

Solving for variable 'x'.

Reorder the terms:
39 + -17x + x2 = -39 + 17x + 39 + -17x

Reorder the terms:
39 + -17x + x2 = -39 + 39 + 17x + -17x

Combine like terms: -39 + 39 = 0
39 + -17x + x2 = 0 + 17x + -17x
39 + -17x + x2 = 17x + -17x

Combine like terms: 17x + -17x = 0
39 + -17x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-39' to each side of the equation.
39 + -17x + -39 + x2 = 0 + -39

Reorder the terms:
39 + -39 + -17x + x2 = 0 + -39

Combine like terms: 39 + -39 = 0
0 + -17x + x2 = 0 + -39
-17x + x2 = 0 + -39

Combine like terms: 0 + -39 = -39
-17x + x2 = -39

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 = -39 + 72.25

Reorder the terms:
72.25 + -17x + x2 = -39 + 72.25

Combine like terms: -39 + 72.25 = 33.25
72.25 + -17x + x2 = 33.25

Factor a perfect square on the left side:
(x + -8.5)(x + -8.5) = 33.25

Calculate the square root of the right side: 5.766281297

Break this problem into two subproblems by setting 
(x + -8.5) equal to 5.766281297 and -5.766281297.

Subproblem 1

x + -8.5 = 5.766281297 Simplifying x + -8.5 = 5.766281297 Reorder the terms: -8.5 + x = 5.766281297 Solving -8.5 + x = 5.766281297 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 = 5.766281297 + 8.5 Combine like terms: -8.5 + 8.5 = 0.0 0.0 + x = 5.766281297 + 8.5 x = 5.766281297 + 8.5 Combine like terms: 5.766281297 + 8.5 = 14.266281297 x = 14.266281297 Simplifying x = 14.266281297

Subproblem 2

x + -8.5 = -5.766281297 Simplifying x + -8.5 = -5.766281297 Reorder the terms: -8.5 + x = -5.766281297 Solving -8.5 + x = -5.766281297 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 = -5.766281297 + 8.5 Combine like terms: -8.5 + 8.5 = 0.0 0.0 + x = -5.766281297 + 8.5 x = -5.766281297 + 8.5 Combine like terms: -5.766281297 + 8.5 = 2.733718703 x = 2.733718703 Simplifying x = 2.733718703

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.266281297, 2.733718703}

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