X^2-17X+5=0

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Solution for X^2-17X+5=0 equation:


Simplifying
X2 + -17X + 5 = 0

Reorder the terms:
5 + -17X + X2 = 0

Solving
5 + -17X + X2 = 0

Solving for variable 'X'.

Begin completing the square.

Move the constant term to the right:

Add '-5' to each side of the equation.
5 + -17X + -5 + X2 = 0 + -5

Reorder the terms:
5 + -5 + -17X + X2 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -17X + X2 = 0 + -5
-17X + X2 = 0 + -5

Combine like terms: 0 + -5 = -5
-17X + X2 = -5

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 = -5 + 72.25

Reorder the terms:
72.25 + -17X + X2 = -5 + 72.25

Combine like terms: -5 + 72.25 = 67.25
72.25 + -17X + X2 = 67.25

Factor a perfect square on the left side:
(X + -8.5)(X + -8.5) = 67.25

Calculate the square root of the right side: 8.200609733

Break this problem into two subproblems by setting 
(X + -8.5) equal to 8.200609733 and -8.200609733.

Subproblem 1

X + -8.5 = 8.200609733 Simplifying X + -8.5 = 8.200609733 Reorder the terms: -8.5 + X = 8.200609733 Solving -8.5 + X = 8.200609733 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 = 8.200609733 + 8.5 Combine like terms: -8.5 + 8.5 = 0.0 0.0 + X = 8.200609733 + 8.5 X = 8.200609733 + 8.5 Combine like terms: 8.200609733 + 8.5 = 16.700609733 X = 16.700609733 Simplifying X = 16.700609733

Subproblem 2

X + -8.5 = -8.200609733 Simplifying X + -8.5 = -8.200609733 Reorder the terms: -8.5 + X = -8.200609733 Solving -8.5 + X = -8.200609733 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 = -8.200609733 + 8.5 Combine like terms: -8.5 + 8.5 = 0.0 0.0 + X = -8.200609733 + 8.5 X = -8.200609733 + 8.5 Combine like terms: -8.200609733 + 8.5 = 0.299390267 X = 0.299390267 Simplifying X = 0.299390267

Solution

The solution to the problem is based on the solutions from the subproblems. X = {16.700609733, 0.299390267}

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