Question
Simplify the following expressions::
$(\sqrt{3}+\sqrt{7})^2$
$(\sqrt{3}+\sqrt{7})^2$
✓
Answer
$(\sqrt{3}+\sqrt{7})^2=(\sqrt{3})^2+2 \sqrt{3} \sqrt{7}+(\sqrt{7})^2=3+2 \sqrt{21}+7=10+2 \sqrt{21}$
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