7
− 7
− 7√3
7√3
Correct answer is D
4√27 + 5√12 − 3√75
= 4√3 × 9 + 5√3 × 4 − 3√3 × 25
= 4 × 3√3 + 5 × 2√3 − 3 × 5√3
= 12√3 + 10√3 − 15√3
= (12 + 10 − 15)√3
= 7√3
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