Respuesta :

shantae4

Answer: p2+4pq - r2

Step-by-step explanation:

p2+ pq + r2 + p2 + 4pq - r2

First, rearrange so like terms a beside each other.

p2 + p2 + pq + 4pq +r2 - r2

= 2p2 + 5pq