Question

Which function is a quadratic function?
p(x) = 2x(x2 + 6) + 1
m(x) = –4(x + 3) – 2
t(x) = –8x2(x2 – 6) + 1
h(x) = 3x(x – 2) – 4

Answer 1

recall that a quadratic function has 2 as its highest exponent

try to see which of the function will have an x^2 term as the highest exponent term

for example, p(x) wouldn't work because the highest exponent will be x^3 when its fully expanded. p(x) expands to 2x^3 + 12 x + 1

repeat this logic with the other choices