p^2-4p+c=21

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Solution for p^2-4p+c=21 equation:


Simplifying
p2 + -4p + c = 21

Reorder the terms:
c + -4p + p2 = 21

Solving
c + -4p + p2 = 21

Solving for variable 'c'.

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

Add '4p' to each side of the equation.
c + -4p + 4p + p2 = 21 + 4p

Combine like terms: -4p + 4p = 0
c + 0 + p2 = 21 + 4p
c + p2 = 21 + 4p

Add '-1p2' to each side of the equation.
c + p2 + -1p2 = 21 + 4p + -1p2

Combine like terms: p2 + -1p2 = 0
c + 0 = 21 + 4p + -1p2
c = 21 + 4p + -1p2

Simplifying
c = 21 + 4p + -1p2

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