Evaluate the following. click on not a real number

Ответ:

emmacox069

10.03.2022

1) $\sqrt{-64}$ is not a real number.

2) $-\sqrt{25} =-5$

Step-by-step explanation:

1) The square root of a number is defined for real numbers if and only if the number under the square root sign is greater than or equal to zero.

This implies that $\sqrt{-64}$ is not a real number because $-64\:$

2) $-\sqrt{25} =-\sqrt{5^2} =-5$ .

The number under the square root sign is , which is greater than zero. Note that the negative sign is not inside the square root sign, it is outside it.

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Evaluate the following. click on "not a real number" if applicable.

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