Question

$4 + \sqrt{3} - \sqrt{7} + \sqrt{3} + \sqrt{7 }$
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Answer 1

Given,

$4 + \sqrt{3 \: } - \sqrt{7} + \sqrt{3} + \sqrt{7} \\ - \sqrt{7} \: and \: + \sqrt{7} \: will \: \: get \: cancelled \: out$

$+ \sqrt{3} \: and \: + \sqrt{3} will \: be \: added \\ \sqrt{3} + \sqrt{3} = 2 \sqrt{3}$

so, the answer will become-

$4 + 2 \sqrt{3}$