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OpenStudy (anonymous):
Help please Multiply: (2 + square root sign 7) (1+3 square root sign 7)
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OpenStudy (anonymous):
\[(2+\sqrt{7})(1+3\sqrt{7})\]
OpenStudy (anonymous):
\[ 23+7\sqrt{7} \]
hero (hero):
|dw:1316367379265:dw|
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