Plss what’s the answer for this its driving me crazy

Question

show that the following function is a quadratic function f(x)=2-x

Answer 1

f(x) = 2-x is not a quadratic, it's a linear equation.

Maybe it got copied incorrectly

f(x) =2^-x is also not a quadratic, it's an exponential function

to be quadratic, the variable must have an exponent of 2, such as

f(x) = x^2 or f(x) = -x^2

or a term has variables where their exponents sum to 2, such as

xy = 2 or f(x) =y = 2/x

or f(x) = 2/(x^-1) That's starting to look closer to the original problem as posted