Jabarkan dan sederhankanlah (9p-6q)2

(9p-6q)²= (9p-6q) (9p-6q) = 81p -56pq – 56pq – 36q = 81p – 112pq – 36pq

1.(9p-6q)(9p-6q)
tinggal disamain variabelnya
2.9p+9p-6q-6q
dijumlah deh
3.18p-12q