What are the solution(s) of x2-4=0

Which expression is equivalent to 4 square root 6 divided by 3 root 2

15 points ! ~ see if you know the answer to both you!

Determine the domain and range of the given function. the domain is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}. the range is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}.