Question

Which represents a quadratic function?

f(x) = −8x3 − 16x2 − 4x
f (x) = three-quarters x 2 + 2x − 5
f(x) = StartFraction 4 Over x squared EndFraction minus StartFraction 2 Over x EndFraction + 1
f(x) = 0x2 − 9x + 7

Answer 1

C- f(x)=4/x(2)-2/x+1

Answer 2

f(x)=start fraction 4 over x squared End fraction minus start fraction 2 over x end fraction +1