Question

The range and domain of f(x) = 2√x -2.
I need to show work. help =/

Answer 1

first of all x should be greater than 0 so that square root can operate

Answer 2

x -2 >/= 0

Answer 3

is x-2 under square root?

Answer 4

http://www.wolframalpha.com/input/?i=The+range+and+domain+of+f%28x%29+%3D+2%E2%88%9Ax+-2.+

Answer 5

Thanks Nurali, but I have to show work and everytime I use that it gives me x >/= 0 and I don't think that is right for every question.
Yes x-2 is under the square root.

Answer 6

x-2>=0
x>=2

Answer 7

^that will be domain