Question

Which represents a quadratic function?

A) f(x) = −8x3 − 16x2 − 4x
B) f (x) = x 2 + 2x − 5
C) f(x) = + 1
D) f(x) = 0x2 − 9x + 7

Answer 1

THE ANSWER IS B, CAUSE THE HIGHEST EXPONENT FOR A QUADRATIC FUNCTION SHOULD BE 2, AND WHICH A,B AND C SHOULD NOT BE EQUAL TO ZERO. HOPE THIS HELPS!