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OpenStudy (anonymous):
Multiply and simplify:
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OpenStudy (anonymous):
OpenStudy (anonymous):
\[(9+\sqrt{3})^2=(9+\sqrt{3})(9+\sqrt{3})=9^2+2\times 9\times \sqrt{3}+\sqrt{3}^2\] is a start
OpenStudy (anonymous):
so it would be 81+ 2sqareroot3?
OpenStudy (ksaimouli):
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