Question

Is u(x) = –x + 3x2 – 8 a quadratic function

Answer 1

Explanation:

A quadratic function is a polynomial in which the highest degree of its exponent is a 2, and it is in one variable only. So, yes, this is a quadratic, although it is not in descending form. Standard form for this would be

`u(x)=3x^2-x-8`