hasil pengurangan: (p2-pq-q2) dari (-3p2+pq+q2) adalah?

-3p2 + pq +q2 - (p2 - pq - q2)
= - 3p2 + pq + q2 - p2 +pq + q2
= - 4p2 + 2pq +2q2

[tex] - 3 {p}^{2} + pq + {q}^{2} - ( {p}^{2} - pq - {q}^{2}) \\ - 3 {p}^{2} + pq + {q}^{2} -{p}^{2} + pq + {q}^{2} \\ - 4{p}^{2} + 2pq + 2{q}^{2} [/tex]