Question

if p+1/p=2, then what is the result of p2-1/p2​

Answer 1

$let \: p = x \\ x + 1 \div x = 2 \\ x + 1 = 2x \\ 1 = 2x - x \\ x = 1 \\ now \: {x}^{2} - 1 \div {x}^{2} \\ = {1}^{2} - 1 \div {1}^{2} \\ = 1 - 1 \div 1 \\ = 0 \div 1 \\ = 0$

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