Choose the correct classification of 5x + 2x2 − 8 by number of terms and by degree.
a. third degree polynomial
b. fourth degree trinomial
c. second degree trinomial
d. sixth degree polynomial

-- The highest power of 'x'in the expression is x², so it's a second-degree expression.

-- The expression has 3 terms ...  5x,  2x²,  and  -8  ... so it's a TRInomial.

the answer will be the last one