1. The problem statement, all variables and given/known data I have the function H^2 + 12756H and I want to find the domain and range of it's square root algebraically. 2. Relevant equations 3. The attempt at a solution I understand y= √(H^2 + 12756H) is undefined if H^2 + 12756H < 0, however I dont get how to find its domain and range using algebra. Maybe someone can help me.