u^2-16u+3=0

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Solution for u^2-16u+3=0 equation:


Simplifying
u2 + -16u + 3 = 0

Reorder the terms:
3 + -16u + u2 = 0

Solving
3 + -16u + u2 = 0

Solving for variable 'u'.

Begin completing the square.

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + -16u + -3 + u2 = 0 + -3

Reorder the terms:
3 + -3 + -16u + u2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -16u + u2 = 0 + -3
-16u + u2 = 0 + -3

Combine like terms: 0 + -3 = -3
-16u + u2 = -3

The u term is -16u.  Take half its coefficient (-8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
-16u + 64 + u2 = -3 + 64

Reorder the terms:
64 + -16u + u2 = -3 + 64

Combine like terms: -3 + 64 = 61
64 + -16u + u2 = 61

Factor a perfect square on the left side:
(u + -8)(u + -8) = 61

Calculate the square root of the right side: 7.810249676

Break this problem into two subproblems by setting 
(u + -8) equal to 7.810249676 and -7.810249676.

Subproblem 1

u + -8 = 7.810249676 Simplifying u + -8 = 7.810249676 Reorder the terms: -8 + u = 7.810249676 Solving -8 + u = 7.810249676 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + u = 7.810249676 + 8 Combine like terms: -8 + 8 = 0 0 + u = 7.810249676 + 8 u = 7.810249676 + 8 Combine like terms: 7.810249676 + 8 = 15.810249676 u = 15.810249676 Simplifying u = 15.810249676

Subproblem 2

u + -8 = -7.810249676 Simplifying u + -8 = -7.810249676 Reorder the terms: -8 + u = -7.810249676 Solving -8 + u = -7.810249676 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + u = -7.810249676 + 8 Combine like terms: -8 + 8 = 0 0 + u = -7.810249676 + 8 u = -7.810249676 + 8 Combine like terms: -7.810249676 + 8 = 0.189750324 u = 0.189750324 Simplifying u = 0.189750324

Solution

The solution to the problem is based on the solutions from the subproblems. u = {15.810249676, 0.189750324}

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