Here's the question you clicked on:
likecrazy143
Classify 3x^5 - 8x^3 - 2x^2 + 5 by number of terms.
how many terms can you count/
iff the is exactly one term its a monomial iff the is exactly two terms its a binomial iff the is exactly three terms its a trinomial iff there is exactly four terms its a quadrinomial iff there is exactly five terms its a quintinomial ...
Okay, so there are four terms here: 3x^5 8x^3 2x^2 5 So, its a quadrinomial. Thanks to Rakhus too xD
Normally when more than 3 terms they would call it polynomial, but quadrinomial works too.