4+p*p=20

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Solution for 4+p*p=20 equation: 


Simplifying
4 + p * p = 20

Multiply p * p
4 + p2 = 20

Solving
4 + p2 = 20

Solving for variable 'p'.

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

Add '-4' to each side of the equation.
4 + -4 + p2 = 20 + -4

Combine like terms: 4 + -4 = 0
0 + p2 = 20 + -4
p2 = 20 + -4

Combine like terms: 20 + -4 = 16
p2 = 16

Simplifying
p2 = 16

Take the square root of each side:
p = {-4, 4}

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