√7⁄√2 multiply numerator and denominator by √2 ....this gives...
[√7 * √2] / 2 = √14 / 2
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4⁄√3 multiply numerator and denominator by √3 ....we have...
[4√3] / 3 or just (4/3)√3
√7⁄√2 multiply numerator and denominator by √2 ....this gives...
[√7 * √2] / 2 = √14 / 2
----------------------------------------------------------------------------------------------------------------------
4⁄√3 multiply numerator and denominator by √3 ....we have...
[4√3] / 3 or just (4/3)√3