Answer:
-1
not a real number
Step-by-step explanation:
[tex] -\sqrt{1} = -1 [/tex]
Above, take the square root of 1. What number multiplied by itself equals 1? Answer is 1. Square root of 1 is 1. Then you take its negative, so answer is -1.
[tex] \sqrt{-100} [/tex] not a real number
Problem above is what number multiplied by itself equals -100?
There is no such real number.
10 * 10 = 100
(-10) * (-10) = 100
If you multiply 10 by itself, you get 100.
If you multiply -10 by itself, it is also 100.
There is no real number that you can multi;ly by itself and get -100.
