Hello, Mathnood768!
We have: .Simplify. Identify the variable for which the radical represents a real number.
We have: .
We have: .
If is real, then
We have: .
If is real, then = any real number.
Question #3 a)b)c)d): imgur: the simple image sharer
My attempt: imgur: the simple image sharer
I have no clue how I should start c) or d), I tried a) and b) but got it wrong...