-x^2+28x-60=0

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Solution for -x^2+28x-60=0 equation:


Simplifying
-1x2 + 28x + -60 = 0

Reorder the terms:
-60 + 28x + -1x2 = 0

Solving
-60 + 28x + -1x2 = 0

Solving for variable 'x'.

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

Divide each side by '-1'.
60 + -28x + x2 = 0

Move the constant term to the right:

Add '-60' to each side of the equation.
60 + -28x + -60 + x2 = 0 + -60

Reorder the terms:
60 + -60 + -28x + x2 = 0 + -60

Combine like terms: 60 + -60 = 0
0 + -28x + x2 = 0 + -60
-28x + x2 = 0 + -60

Combine like terms: 0 + -60 = -60
-28x + x2 = -60

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

Add '196' to each side of the equation.
-28x + 196 + x2 = -60 + 196

Reorder the terms:
196 + -28x + x2 = -60 + 196

Combine like terms: -60 + 196 = 136
196 + -28x + x2 = 136

Factor a perfect square on the left side:
(x + -14)(x + -14) = 136

Calculate the square root of the right side: 11.66190379

Break this problem into two subproblems by setting 
(x + -14) equal to 11.66190379 and -11.66190379.

Subproblem 1

x + -14 = 11.66190379 Simplifying x + -14 = 11.66190379 Reorder the terms: -14 + x = 11.66190379 Solving -14 + x = 11.66190379 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + x = 11.66190379 + 14 Combine like terms: -14 + 14 = 0 0 + x = 11.66190379 + 14 x = 11.66190379 + 14 Combine like terms: 11.66190379 + 14 = 25.66190379 x = 25.66190379 Simplifying x = 25.66190379

Subproblem 2

x + -14 = -11.66190379 Simplifying x + -14 = -11.66190379 Reorder the terms: -14 + x = -11.66190379 Solving -14 + x = -11.66190379 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + x = -11.66190379 + 14 Combine like terms: -14 + 14 = 0 0 + x = -11.66190379 + 14 x = -11.66190379 + 14 Combine like terms: -11.66190379 + 14 = 2.33809621 x = 2.33809621 Simplifying x = 2.33809621

Solution

The solution to the problem is based on the solutions from the subproblems. x = {25.66190379, 2.33809621}

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