Math Help - Domain rang

1. Domain rang

Find the largest possible domain for the following funtions:

a) sqrt of x(x-4)

b) sqrt of 2x(x-4)

2. Originally Posted by Oasis1993
Find the largest possible domain for the following funtions:

a) sqrt of x(x-4)
find $x^2-4x>0$

Originally Posted by Oasis1993

b) sqrt of 2x(x-4)

find $2x^2-8x>0$