u^2-28u+24=0

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Solution for u^2-28u+24=0 equation:


Simplifying
u2 + -28u + 24 = 0

Reorder the terms:
24 + -28u + u2 = 0

Solving
24 + -28u + u2 = 0

Solving for variable 'u'.

Begin completing the square.

Move the constant term to the right:

Add '-24' to each side of the equation.
24 + -28u + -24 + u2 = 0 + -24

Reorder the terms:
24 + -24 + -28u + u2 = 0 + -24

Combine like terms: 24 + -24 = 0
0 + -28u + u2 = 0 + -24
-28u + u2 = 0 + -24

Combine like terms: 0 + -24 = -24
-28u + u2 = -24

The u term is -28u.  Take half its coefficient (-14).
Square it (196) and add it to both sides.

Add '196' to each side of the equation.
-28u + 196 + u2 = -24 + 196

Reorder the terms:
196 + -28u + u2 = -24 + 196

Combine like terms: -24 + 196 = 172
196 + -28u + u2 = 172

Factor a perfect square on the left side:
(u + -14)(u + -14) = 172

Calculate the square root of the right side: 13.114877049

Break this problem into two subproblems by setting 
(u + -14) equal to 13.114877049 and -13.114877049.

Subproblem 1

u + -14 = 13.114877049 Simplifying u + -14 = 13.114877049 Reorder the terms: -14 + u = 13.114877049 Solving -14 + u = 13.114877049 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + u = 13.114877049 + 14 Combine like terms: -14 + 14 = 0 0 + u = 13.114877049 + 14 u = 13.114877049 + 14 Combine like terms: 13.114877049 + 14 = 27.114877049 u = 27.114877049 Simplifying u = 27.114877049

Subproblem 2

u + -14 = -13.114877049 Simplifying u + -14 = -13.114877049 Reorder the terms: -14 + u = -13.114877049 Solving -14 + u = -13.114877049 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + u = -13.114877049 + 14 Combine like terms: -14 + 14 = 0 0 + u = -13.114877049 + 14 u = -13.114877049 + 14 Combine like terms: -13.114877049 + 14 = 0.885122951 u = 0.885122951 Simplifying u = 0.885122951

Solution

The solution to the problem is based on the solutions from the subproblems. u = {27.114877049, 0.885122951}

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