Question

F(x) = (x + 1)^2
Determine for each x-value whether it is in the domain of f
or not.

Answer 1

All of them are in the domain.

Explanation:

The function is f(x)= (x+1)^2. If you simplify this, you get y=x^2+2x+1=0. This is a quadratic that opens upwards. There are no gaps in the x values and no impossible values. The domain is all real numbers and all the answer choices are real numbers.