When dealing with roots, what is the radicand ? before or after taking the indicated root?

Given: x + y = 6. if xe (-15, -6, -1), then which of the following sets of ordered pairs are solutions? © {(-15, -21), (-6, -12), (-1, -7)} [(-15, 21), (-6, , 7)} {(-15, 21), (-6, 12), (-1, -7)}

Identify the conclusion of the conditional statement. if you live in phoenix, then you live in arizona.

(60 points) explain this in detail