Question

（a+b）的五次方=？

Answer 1

（a+b）的五次方=a^5+5a^4b+10a^3b^2+10a^2b^3+5ab^4+b^5

Answer 2

=a^5+5a^4b+10a^3b^2+10a^2b^3+5ab^4+b^5

Answer 3

a^5+5a^4b+10a^3b^2+10a^2b^3+5ab^4+b^5

Answer 4

=a^5+5a^4b+10a^3b^2+10a^2b^3+5ab^4+b^5