Question

Show that ( p+m)^2 - (p-m)2=4pm​

Answer 1

$heya \\ \\ \\ (p + m) {}^{2} - (p - m) {}^{2} = \\ \\ p {}^{2} + m {}^{2} + 2pm - p {}^{2} - m {}^{2} + 2pm \\ \\ \\ 2pm + 2pm \\ \\ \\ \\ 4pm$