Math, asked by GAURAV40521, 6 months ago

Rationalise the denominator 21/√7

Answers

Answered by Anonymous

2

Answer:

$\frac{21}{ \sqrt{7} } \\ = \frac{21 \sqrt{7} }{7} \\ = 3 \sqrt{7}$

hope it helps uh....

mark brainliest

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