Identify any real and extraneous solutions for the equations below.

Sqrt p = -1

So, would this have no real or extraneous solutions?

√p = -1

has no solutions.

√4 = 2, not +2 or -2.

squaring both sides to give

p = 1
gives an extraneous solution, because
√1 = -1
is not true.
√1 = 1