Question

If a + 1/a = 4 then the value of a^2 + 1/a^2?
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Answer 1

if a+1/a=4

(Squaring on both the sides)

(a+1/a)^2=4^2

a^2+(1/a)^2+2=16

a^2+1/a^2=16-2

a^2+1/a^2=14

here is your answer

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