Respuesta :

Answer: -15

Given:

[tex]\sqrt[]{-15}\times\sqrt[]{-15}[/tex]

Since the radical rule states that:

[tex]\begin{gathered} \sqrt[]{a}\sqrt[]{a}=a \\ \Rightarrow\sqrt[]{-15}\times\sqrt[]{-15}=-15 \end{gathered}[/tex]

Therefore, the answer is -15.

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