4ab+2ab+7bc+ba−8cb−10ba+−9bca+24a2
is a ____.
polynomial
4ab+2ab+7bc+ba−8cb−10ba−9bca+24a2
Clubbing the like terms together, we get,
4ab+2ab+ba−10ba+7bc−8cb−9bca+24a2
=4ab+2ab+ab−10ab+7bc−8bc−9bca+24a2
=−3ab−bc−9bca+24a2
Since the expression reduces to 4 terms, it is a polynomial.