7 - the square root of 7 over 10 + the square root of 3
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(7-√7)/(10+√3) needs to be rationalised. To do this multiply top and bottom by 10-√3:

(7-√7)(10-√3)/(100-3)=(70-7√3-10√7+√21)/97

Or, the original fraction can simply be evaluated: 0.3711 approx.
by Top Rated User (1.2m points)

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