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7. The sum of a natural number and its reciprocal is 65.. Find them658

Answer»

Let number is x x+1/x=65/8

x²+1=65x/8

8x²+8=65x

8x²-65x+8=0

8x²-64x-x+8=0

8x(x-8)-1(x-8)=0

(x-8)(8x-1)=0

x=8,1/8

So number is 8



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