you can't evaluate this because it's negative. if u square a positive number, the answer is positive. and if u square a negative number, the answer is positive. so u can't find the square root of a negative number.
depends which math you are in
if you are in in algebra 2 or higher the answer is 9i
if you are below algebra 2, the answer is undefined.
i is equal to â-1, so that way you can factor that out leavingâ81 which is 9, so the answer is 9i
The answer is positive or negative 9i, where i is the square root of -1.
only in complex numbers.
sqrt(-81)
= sqrt(81)sqrt(-1)
= 9i
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Verified answer
you can't evaluate this because it's negative. if u square a positive number, the answer is positive. and if u square a negative number, the answer is positive. so u can't find the square root of a negative number.
depends which math you are in
if you are in in algebra 2 or higher the answer is 9i
if you are below algebra 2, the answer is undefined.
i is equal to â-1, so that way you can factor that out leavingâ81 which is 9, so the answer is 9i
The answer is positive or negative 9i, where i is the square root of -1.
only in complex numbers.
sqrt(-81)
= sqrt(81)sqrt(-1)
= 9i