Question

is the example for a trinomial.

• A. $x$
• B. ab
• C. $a^2$+ 2ab + $b^2$
• D. a+b

Answer 1

The correct option is C $a^2$+ 2ab + $b^2$

$x$ has one term in it, and it is a monomial.
ab has two variables. Since they are a product, the number of terms is just one. Hence, it is a monomial.
$a+b$ is a binomial.
$a^2+2ab+b^2$ has three unlike terms and hence it is a trinomial.