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`sqrt(21-4sqrt5+8sqrt3-4sqrt12)=`

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in Mathematics by (75.1k points)
`sqrt(21-4sqrt5+8sqrt3-4sqrt12)=`
A. `sqrt5-2+2sqrt3`
B. `-sqrt5-sqrt4-sqrt12`
C. `-sqrt5+sqrt4+sqrt12`
D. `-sqrt5-sqrt4+sqrt12`
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1 Answer

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Correct Answer - C
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