Respuesta :
Upon a little bit of rearranging you have:
2pq-4p-5qr+10r now factoring 1st and 2nd pair of terms...
2p(q+2)-5r(q+2) which is equal to:
(2p-5r)(q+2)
2pq-4p-5qr+10r now factoring 1st and 2nd pair of terms...
2p(q+2)-5r(q+2) which is equal to:
(2p-5r)(q+2)