What kind of Polynomial is this?

8b

A. Binomial
B. Monomial
C. Trinomial

What kind of polynomial is this?

2a^2 + 3b + c

A. Trinomial
B. Monomial
C. Binomial

The radical equation 2+√2x-3 = √x+7 has a solution set [x= a0} and an extraneous root x = a1.

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

If square root x = -7, then x= -49 true or false