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16 raised to the second power + X raised to the second power = 30 raised to the second power. QUESTION: What does X equal?

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[tex]16^2+x^2=30^2\\
x^2=900-256\\
x^2=644\\
x=\sqrt{644} \vee x=-\sqrt{644}\\
x=2\sqrt{161} \vee x=-2\sqrt{161}[/tex]

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