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(a+ 1/a )2 = a2 + 1/a2 + 2
(a +1/a)2 = 23+2
a+1/a = 5
hope it helps u
(a +1/a)2 = 23+2
a+1/a = 5
hope it helps u
Answered by
1
a^2 + 1/a^2 = 23. --------- 1
(a + 1/a)^2 = a^2 + 1/a^2 + 2×a×1/a.
(a + 1/a) = √(23 + 2). [ From 1 and a and 1/a cancelled out].
a + 1/a = √25 = 5.
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