Answer:
[tex]4p^2q-4q+8p[/tex]
Step-by-step explanation:
[tex](12p^2q+p-3pq^2)-(4q-7p+8p^2q-3pq^2)[/tex]
Apply rule [tex]-(-a)=a[/tex] and [tex]-(a)=-a[/tex]:
[tex]\implies 12p^2q+p-3pq^2-4q+7p-8p^2q+3pq^2[/tex]
Collect like terms:
[tex]\implies 12p^2q-8p^2q-3pq^2+3pq^2-4q+7p+p[/tex]
Combine like terms:
[tex]\implies 4p^2q-4q+8p[/tex]
