Simplify 2√7- 14/√7+7/√21
...Simplify 2√7- 14/√7+7/√21
√2121
7√2121
√213
3√21
Correct answer is C
2√7- 14/√7 +7/√21
L.C.M is √21
√21∗2√7−√3∗14+7√21
=2∗7√3−14√3+7√21
= 14√3−14√3+7√21
=7√21
or
7×√21√21×√21
= 7×√2121 or √213
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