Question

Which of the following functions is quadratic?
O A. f(x) =2/x
B. f(x) = 5^2
O c. f(x) = 2x^3+ 3x^2 - 5
O D. f(x) = 3(x – 4)(x+3)

Answer 1

I think it’s C, the first 2 options don’t make sense.