f^2-21f-22=0

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Solution for f^2-21f-22=0 equation:


Simplifying
f2 + -21f + -22 = 0

Reorder the terms:
-22 + -21f + f2 = 0

Solving
-22 + -21f + f2 = 0

Solving for variable 'f'.

Factor a trinomial.
(-1 + -1f)(22 + -1f) = 0

Subproblem 1

Set the factor '(-1 + -1f)' equal to zero and attempt to solve: Simplifying -1 + -1f = 0 Solving -1 + -1f = 0 Move all terms containing f to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + -1f = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -1f = 0 + 1 -1f = 0 + 1 Combine like terms: 0 + 1 = 1 -1f = 1 Divide each side by '-1'. f = -1 Simplifying f = -1

Subproblem 2

Set the factor '(22 + -1f)' equal to zero and attempt to solve: Simplifying 22 + -1f = 0 Solving 22 + -1f = 0 Move all terms containing f to the left, all other terms to the right. Add '-22' to each side of the equation. 22 + -22 + -1f = 0 + -22 Combine like terms: 22 + -22 = 0 0 + -1f = 0 + -22 -1f = 0 + -22 Combine like terms: 0 + -22 = -22 -1f = -22 Divide each side by '-1'. f = 22 Simplifying f = 22

Solution

f = {-1, 22}

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