Question

Which function is a quadratic function?
t(x) = (x – 4)2 + 3
q(x) = (2x + 4)3 + 3
r(x) = (–6x – 4)4 + 3(x + 2)2
s(x) = –(x – 6) + 3(x + 1)

Answer 1

t(x) is quadratic because on expanding the terms we x^2 in the expression which indicates the function is quadratic in nature.. :-)