23√5 + 56√2 + 2
23√5 + 56√2 + 12√10
23√5 + 56√2 + 12√10 + 2
23√5 - 56√2 + 12√10 + 2
Correct answer is C
(√5+3)(4+√10)(4−√10)(4+√10)
= 4√5+√50+12+3√1042−(√10)2
= 4√5+5√2+12+3√1016−10
= 4√56+5√26+126+3√106
= 23√5 + 56√2 + 12√10 + 2
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