f^2-22f=3

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Solution for f^2-22f=3 equation:


Simplifying
f2 + -22f = 3

Reorder the terms:
-22f + f2 = 3

Solving
-22f + f2 = 3

Solving for variable 'f'.

Reorder the terms:
-3 + -22f + f2 = 3 + -3

Combine like terms: 3 + -3 = 0
-3 + -22f + f2 = 0

Begin completing the square.

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -22f + 3 + f2 = 0 + 3

Reorder the terms:
-3 + 3 + -22f + f2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -22f + f2 = 0 + 3
-22f + f2 = 0 + 3

Combine like terms: 0 + 3 = 3
-22f + f2 = 3

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 = 3 + 121

Reorder the terms:
121 + -22f + f2 = 3 + 121

Combine like terms: 3 + 121 = 124
121 + -22f + f2 = 124

Factor a perfect square on the left side:
(f + -11)(f + -11) = 124

Calculate the square root of the right side: 11.135528726

Break this problem into two subproblems by setting 
(f + -11) equal to 11.135528726 and -11.135528726.

Subproblem 1

f + -11 = 11.135528726 Simplifying f + -11 = 11.135528726 Reorder the terms: -11 + f = 11.135528726 Solving -11 + f = 11.135528726 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 = 11.135528726 + 11 Combine like terms: -11 + 11 = 0 0 + f = 11.135528726 + 11 f = 11.135528726 + 11 Combine like terms: 11.135528726 + 11 = 22.135528726 f = 22.135528726 Simplifying f = 22.135528726

Subproblem 2

f + -11 = -11.135528726 Simplifying f + -11 = -11.135528726 Reorder the terms: -11 + f = -11.135528726 Solving -11 + f = -11.135528726 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 = -11.135528726 + 11 Combine like terms: -11 + 11 = 0 0 + f = -11.135528726 + 11 f = -11.135528726 + 11 Combine like terms: -11.135528726 + 11 = -0.135528726 f = -0.135528726 Simplifying f = -0.135528726

Solution

The solution to the problem is based on the solutions from the subproblems. f = {22.135528726, -0.135528726}

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