Question

the value of square root -9 is not -3 because ___

Answer 1

Answer:

you cannot have a negative root. It errors out if you put the negative in the root.

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Brainliest??

Step-by-step explanation:

Answer 2

Answer:

Square root is not defined for negative numbers.

Step-by-step explanation:

We are asked to determine why the value of $\sqrt{-9}$ is not $-3$.

We know that square root of a negative number is not defined. To find the square root of negative number we use imaginary unit $i$.

We know that $i^2=-1$, so we can solve $\sqrt{-9}$ as:

$\sqrt{-1\times 9}$

$\sqrt{i^2\times 3^2}$

$3i$

Therefore, the solution of our given expression would be $3i$ not $-3$.