Answers

2015-10-27T23:28:03+05:30
No ,its a bionomial cause only two terms are there
0
2015-10-28T01:52:15+05:30
No,  x^{2/3} +  x^{3} is not a polynomial because 2/3 is not an integer.
Polynomials should contain non-negative integer power.
1 5 1
Hope it helps :) and if it does plz mark as best ^_^
Nice ans :)