3 years ago

Help me pls help ..........

Mathematics

1 answer:

harkovskaia [24]3 years ago

7 0

Answer:

Step-by-step explanation:

(x)^2+(1/x)^2=18

(x-1/x)^2+2x.1/x=18

(x-1/x)^2+2=18

(x-1/x)^2=16

(x-1/x)^2=4^2

x-1/x=4

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