Verified answer

√p + √q = √p+q

p+q + 2√pq =p+q

2√pq = 0

then true only one of p or q equal to 0

√p + √q = √(p + q)

Square both sides.

p + q + 2√(pq) = p + q

2√pq = 0

pq = 0

This means either p or q = 0, but p = q = 0 cannot occur, since 0 * 0 = indeterminate.

Either p or q, or both, must equal 0. I'm guessing that you haven't tried 0 yet.

i hate math