a-1\a=5 find the value of a2 +1\a2
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a - 1/a =5
take squaring both side
(a - 1/a )^2 = (5)^2
a^2 +1/a^2 -2.a.1/a =25
a^2+1/a^2 -2 =25
a^2+1/a^2 =27 (answer)
take squaring both side
(a - 1/a )^2 = (5)^2
a^2 +1/a^2 -2.a.1/a =25
a^2+1/a^2 -2 =25
a^2+1/a^2 =27 (answer)
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