1−√52
1−√54
√5−12
1+√54
Correct answer is B
2−√53−√5 x 3+√53+√5
(2−√5)(3+√5)(3−√5)(3+√5) = 6+2√5−3√5−√259+3√5−3√5−√25
= 6−√5−59−5
= 1−√54
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