Question

(p+q-r)²-(p-q+r)²solve

Answer 1

Answer:

4p (q-r) is the answer.

Step-by-step explanation:

(p+q-r)²-(p-q+r)²

= [(p+q-r) + (p-q+r)] [(p+q-r) - (p-q+r)]                   {As: a²- b² = (a+b) (a-b)}

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

= 2p ( 2q - 2 r)

= 2 x 2p ( q-r)

= 4p (q-r) (answer)