Question

answer this queston plz​

Answer 1

Answer:

$\frac{28}{ \sqrt{28} } - \sqrt{7} →1 \\ factorise \: \sqrt{28} \\ \sqrt{28} = \sqrt{2 \times 2 \times 7} = 2 \sqrt{7} \\ put \: this \: value \: in \: equation \: 1 \\ \frac{28}{2 \sqrt{7} } - \sqrt{7} \\ = \frac{28 - 14}{2 \sqrt{7} } \\ = \frac{14}{2 \sqrt{7} } \\ = \frac{14}{2 \sqrt{7} } \times \frac{ - 2 \sqrt{7} }{ - 2 \sqrt{7} } \\ = \frac{28 \sqrt{7} }{28} \\ = \sqrt{7}$

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Answer 2

$Answer:</h3><h3>\begin{gathered}\frac{28}{ \sqrt{28} } - \sqrt{7} →1 \\ factorise \: \sqrt{28} \\ \sqrt{28} = \sqrt{2 \times 2 \times 7} = 2 \sqrt{7} \\ put \: this \: value \: in \: equation \: 1 \\ \frac{28}{2 \sqrt{7} } - \sqrt{7} \\ = \frac{28 - 14}{2 \sqrt{7} } \\ = \frac{14}{2 \sqrt{7} } \\ = \frac{14}{2 \sqrt{7} } \times \frac{ - 2 \sqrt{7} }{ - 2 \sqrt{7} } \\ = \frac{28 \sqrt{7} }{28} \\ = \sqrt{7}\end{gathered}2828−7→1factorise2828=2×2×7=27putthisvalueinequation12728−7=2728−14=2714=2714×−27−27=28287=7</h3><h3></h3><h3>$