To solve the equation
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Subtract 13 from both sides:
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Square both sides to eliminate the square root:
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Divide both sides by 2:
Now, let's check the provided options: 49, 25, 9, and 16. None of these values equals 98, which means none of these options make the equation true.
If you meant to ask for a different equation or different values, please clarify, but based on the information given, none of the provided options are correct.