-u^2+25u-30=0

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Solution for -u^2+25u-30=0 equation:


Simplifying
-1u2 + 25u + -30 = 0

Reorder the terms:
-30 + 25u + -1u2 = 0

Solving
-30 + 25u + -1u2 = 0

Solving for variable 'u'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
30 + -25u + u2 = 0

Move the constant term to the right:

Add '-30' to each side of the equation.
30 + -25u + -30 + u2 = 0 + -30

Reorder the terms:
30 + -30 + -25u + u2 = 0 + -30

Combine like terms: 30 + -30 = 0
0 + -25u + u2 = 0 + -30
-25u + u2 = 0 + -30

Combine like terms: 0 + -30 = -30
-25u + u2 = -30

The u term is -25u.  Take half its coefficient (-12.5).
Square it (156.25) and add it to both sides.

Add '156.25' to each side of the equation.
-25u + 156.25 + u2 = -30 + 156.25

Reorder the terms:
156.25 + -25u + u2 = -30 + 156.25

Combine like terms: -30 + 156.25 = 126.25
156.25 + -25u + u2 = 126.25

Factor a perfect square on the left side:
(u + -12.5)(u + -12.5) = 126.25

Calculate the square root of the right side: 11.236102527

Break this problem into two subproblems by setting 
(u + -12.5) equal to 11.236102527 and -11.236102527.

Subproblem 1

u + -12.5 = 11.236102527 Simplifying u + -12.5 = 11.236102527 Reorder the terms: -12.5 + u = 11.236102527 Solving -12.5 + u = 11.236102527 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '12.5' to each side of the equation. -12.5 + 12.5 + u = 11.236102527 + 12.5 Combine like terms: -12.5 + 12.5 = 0.0 0.0 + u = 11.236102527 + 12.5 u = 11.236102527 + 12.5 Combine like terms: 11.236102527 + 12.5 = 23.736102527 u = 23.736102527 Simplifying u = 23.736102527

Subproblem 2

u + -12.5 = -11.236102527 Simplifying u + -12.5 = -11.236102527 Reorder the terms: -12.5 + u = -11.236102527 Solving -12.5 + u = -11.236102527 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '12.5' to each side of the equation. -12.5 + 12.5 + u = -11.236102527 + 12.5 Combine like terms: -12.5 + 12.5 = 0.0 0.0 + u = -11.236102527 + 12.5 u = -11.236102527 + 12.5 Combine like terms: -11.236102527 + 12.5 = 1.263897473 u = 1.263897473 Simplifying u = 1.263897473

Solution

The solution to the problem is based on the solutions from the subproblems. u = {23.736102527, 1.263897473}

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