Answer:
19x^2
Explanation:
Given the below polynomial;
[tex]3x^{2}+16x^{2}[/tex]To simplify the above, all we need to do is add the coefficient of x^2 together, that is, we combine like terms since the terms are all terms in x^2.
So we'll have;
[tex]3x^{2}+16x^{2}=19x^2[/tex]