if a-1/a=2 find the value of a+1/a
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Answer:
2½
Step-by-step explanation:
(a-1/a)²=2²
, a²+2a.1/a+(1/a)²=4
, a² +2+1/a²=4
, a²+1/a²=2
, a+1/a=2½
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