p*p=1

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Solution for p*p=1 equation: 


Simplifying
p * p = 1

Multiply p * p
p2 = 1

Solving
p2 = 1

Solving for variable 'p'.

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

Simplifying
p2 = 1

Take the square root of each side:
p = {-1, 1}

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