Question

p(p-q)+q(q-r)+r(r-p)​

Answer 1

$\underline{\bf\purple{\dag}\:\mathfrak{Answer }}$

Answer 2

Answer:

p ( p - q ) + q ( q - r ) + r ( r - p )

p² - pq + q² - qr + r² - rp

p² + q² + r² - pq -qr -rp