Question

If x² + 1/x² = 27 then the value of x + 1/x may be​

Answer 1

Answer:

we can also write

(x)²+(1/x)²+2×x×1/x=27-2

x²+1/x²+2=25

(x+1/x)²=5²

then,x+1/x=5

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