Question

求2道合并同类项题的答案3b-3a^3+1+a^3-------------------------------求代数式

Answer 1

3b-3a^3+1+a^3

= -2a^3+3b+1

8p^2-7q+6q-7p^2-7

=( 8p^2-7p^2)+(6q-7q)-7

=p^2-q-7

=3^2-3-7

= -1