Question

Which represents a quadratic function?

f(x) = -8X^3 – 16x^2 - 4x
f(x) = 3/4+ x^2 - 5
f(x) = 4/x^2-2/x+1
f(x) = 0x^2 - 9x + 7

Answer 1

f(x) = 3/4x^2 + 2x -5

quadratic function formula is ax^2+b^2+c