Question

помогите ❤️
$\frac{7 + 3 \sqrt{7} }{ \sqrt{7} }$
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Answer 1

$\frac{7 + 3 \sqrt{7} }{ \sqrt{7} } \times \frac{ \sqrt{7} }{ \sqrt{7} } = \\ = \frac{7 \sqrt{7} + 3 \sqrt{7} \times \sqrt{7} }{ \sqrt{7} \times \sqrt{7} } = \\ = \frac{7 \sqrt{7} + 3 \times 7}{7} = \\ \frac{7( \sqrt{7} +3) }{7} = \sqrt{7} + 3$