f^2-22f+75=0

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Solution for f^2-22f+75=0 equation:


Simplifying
f2 + -22f + 75 = 0

Reorder the terms:
75 + -22f + f2 = 0

Solving
75 + -22f + f2 = 0

Solving for variable 'f'.

Begin completing the square.

Move the constant term to the right:

Add '-75' to each side of the equation.
75 + -22f + -75 + f2 = 0 + -75

Reorder the terms:
75 + -75 + -22f + f2 = 0 + -75

Combine like terms: 75 + -75 = 0
0 + -22f + f2 = 0 + -75
-22f + f2 = 0 + -75

Combine like terms: 0 + -75 = -75
-22f + f2 = -75

The f term is -22f.  Take half its coefficient (-11).
Square it (121) and add it to both sides.

Add '121' to each side of the equation.
-22f + 121 + f2 = -75 + 121

Reorder the terms:
121 + -22f + f2 = -75 + 121

Combine like terms: -75 + 121 = 46
121 + -22f + f2 = 46

Factor a perfect square on the left side:
(f + -11)(f + -11) = 46

Calculate the square root of the right side: 6.782329983

Break this problem into two subproblems by setting 
(f + -11) equal to 6.782329983 and -6.782329983.

Subproblem 1

f + -11 = 6.782329983 Simplifying f + -11 = 6.782329983 Reorder the terms: -11 + f = 6.782329983 Solving -11 + f = 6.782329983 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Add '11' to each side of the equation. -11 + 11 + f = 6.782329983 + 11 Combine like terms: -11 + 11 = 0 0 + f = 6.782329983 + 11 f = 6.782329983 + 11 Combine like terms: 6.782329983 + 11 = 17.782329983 f = 17.782329983 Simplifying f = 17.782329983

Subproblem 2

f + -11 = -6.782329983 Simplifying f + -11 = -6.782329983 Reorder the terms: -11 + f = -6.782329983 Solving -11 + f = -6.782329983 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Add '11' to each side of the equation. -11 + 11 + f = -6.782329983 + 11 Combine like terms: -11 + 11 = 0 0 + f = -6.782329983 + 11 f = -6.782329983 + 11 Combine like terms: -6.782329983 + 11 = 4.217670017 f = 4.217670017 Simplifying f = 4.217670017

Solution

The solution to the problem is based on the solutions from the subproblems. f = {17.782329983, 4.217670017}

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