Can we simplify √-25? Is there a number whose square is −25?
(___)²=−25?
a) None of the numbers that we have dealt with so far has a square that is −25. Why?
b) Any positive number squared is positive.
c) Any negative number squared is positive.
d) So we say there is no real number equal to −25−−−−√ .
e) The square root of a negative number is not a real number.