u^2-14u+5=0

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Solution for u^2-14u+5=0 equation:


Simplifying
u2 + -14u + 5 = 0

Reorder the terms:
5 + -14u + u2 = 0

Solving
5 + -14u + u2 = 0

Solving for variable 'u'.

Begin completing the square.

Move the constant term to the right:

Add '-5' to each side of the equation.
5 + -14u + -5 + u2 = 0 + -5

Reorder the terms:
5 + -5 + -14u + u2 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -14u + u2 = 0 + -5
-14u + u2 = 0 + -5

Combine like terms: 0 + -5 = -5
-14u + u2 = -5

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

Add '49' to each side of the equation.
-14u + 49 + u2 = -5 + 49

Reorder the terms:
49 + -14u + u2 = -5 + 49

Combine like terms: -5 + 49 = 44
49 + -14u + u2 = 44

Factor a perfect square on the left side:
(u + -7)(u + -7) = 44

Calculate the square root of the right side: 6.633249581

Break this problem into two subproblems by setting 
(u + -7) equal to 6.633249581 and -6.633249581.

Subproblem 1

u + -7 = 6.633249581 Simplifying u + -7 = 6.633249581 Reorder the terms: -7 + u = 6.633249581 Solving -7 + u = 6.633249581 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + u = 6.633249581 + 7 Combine like terms: -7 + 7 = 0 0 + u = 6.633249581 + 7 u = 6.633249581 + 7 Combine like terms: 6.633249581 + 7 = 13.633249581 u = 13.633249581 Simplifying u = 13.633249581

Subproblem 2

u + -7 = -6.633249581 Simplifying u + -7 = -6.633249581 Reorder the terms: -7 + u = -6.633249581 Solving -7 + u = -6.633249581 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + u = -6.633249581 + 7 Combine like terms: -7 + 7 = 0 0 + u = -6.633249581 + 7 u = -6.633249581 + 7 Combine like terms: -6.633249581 + 7 = 0.366750419 u = 0.366750419 Simplifying u = 0.366750419

Solution

The solution to the problem is based on the solutions from the subproblems. u = {13.633249581, 0.366750419}

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