F^2-4f=21

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Solution for F^2-4f=21 equation:


Simplifying
F2 + -4f = 21

Solving
F2 + -4f = 21

Solving for variable 'F'.

Move all terms containing F to the left, all other terms to the right.

Add '4f' to each side of the equation.
F2 + -4f + 4f = 21 + 4f

Combine like terms: -4f + 4f = 0
F2 + 0 = 21 + 4f
F2 = 21 + 4f

Simplifying
F2 = 21 + 4f

Reorder the terms:
-21 + F2 + -4f = 21 + 4f + -21 + -4f

Reorder the terms:
-21 + F2 + -4f = 21 + -21 + 4f + -4f

Combine like terms: 21 + -21 = 0
-21 + F2 + -4f = 0 + 4f + -4f
-21 + F2 + -4f = 4f + -4f

Combine like terms: 4f + -4f = 0
-21 + F2 + -4f = 0

The solution to this equation could not be determined.

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