Question

5-2root6 divided by 5+2root6 and subtract by 5+2root6divided by 2-2root 6

Answer 1

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Here is the answer you were looking for:
The answer is
507 - 207√6/10
( Explanation in the image given)
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Answer 2

(5-2 r6)/(5+2 r6)-(5+2 r6)/(2-2 r6)
rationalising (5-2r6)/(5+2r6)×(5-2r6)/(5-2r6)
=(5-2r6)^2/(25-24)
=(25-20r6+24)=(1-20r6)
now rationalising(5+2r6)/(2-2r6)×(2+2r6)/(2+2r6)
=(10+10r6+4r6+24)/(4-24)
=(34+14r6)/20
=(17+7r6)/10
now .. (1-20r6)-(17+7r6)/10
=(10-200r6-17-7r6)/10
=(-7-207r6)/10