1.

If x−1x=4,x−1x=4, then (x+1x)(x+1x) is equal to?

A. 52–√5252–√5252–√52–√52–√52–√5552–√2–√222––√√52
B. 25–√2525–√2525–√25–√25–√25–√2225–√5–√555––√√25
C. 42–√4242–√4242–√42–√42–√42–√4442–√2–√222––√√42
D. 45–√4545–√4545–√45–√45–√45–√4445–√5–√555––√√45
Answer» B. 25–√2525–√2525–√25–√25–√25–√2225–√5–√555––√√25


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