Question

check my work please

Answer 1

OK

Answer 2

If you square a number, it's x * x. So 2^2 = 4, -2^2 = 4

Answer 3

hmmm something amiss

Answer 4

What would 3^2 become

Answer 5

your answers are correct but to a different question.
if f(x)=|x| then your answers would be correct

Answer 6

However you have f(x) = x^2