(7a^3-6a^3b+3a^2b)-(-3a^3-6a^3b+3a^2b+10a^3-3)
=7a^3-6a^3b+3a^2b+3a^3+6a^3b-3a^2b-10a^3+3
=(7+3-10)a^3+(-6+6)a^3b+(3-3)a^2b+3
=3
所以,无论a、b取何值,答案总是3.
(7a^3-6a^3b+3a^2b)-(-3a^3-6a^3b+3a^2b+10a^3-3)
=7a^3-6a^3b+3a^2b+3a^3+6a^3b-3a^2b-10a^3+3
=(7+3-10)a^3+(-6+6)a^3b+(3-3)a^2b+3
=3
所以,无论a、b取何值,答案总是3.