Question

if k-p²=(a+p)(a-p) find the value of k​

Answer 1

$k - p {}^{2} = (a + p)(a - p) \\ k - p {}^{2} = a {}^{2} - p {}^{2} \\ k = a {}^{2} - p {}^{2} + p {}^{2} \\ k = a {}^{2}$