Question

Which represents a quadratic function?

f(x) = 2x3 + 2x2 – 4
f(x) = –7x2 – x + 2
f(x) = –3x + 2
f(x) = 0x2 + 3x – 3

@drewbush63

Answer 1

hint:
a quadratic function, is represented by a second degree polynomial

Answer 2

i don't know what a second degree polynomial is

Answer 3

a second degree polynomial, is a polynomial which contains the second power of the unknown, like this:
\[\Large q\left( x \right) = 100{x^2} - x + 49\]

Answer 4

so i think the answer would be f(x) = –7x2 – x + 2

Answer 5

correct!