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18-10-2020
Mathematics

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if x=2+ root 3 then find the value of (x-1/x)^3

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thomassookoo thomassookoo

18-10-2020

Answer:

10 and ten-elevenths

Step-by-step explanation:

x = 2 + _/3

(x-1/x)^3

(2+_/3)^3 - (1÷2+_/3)^3

= (8 + 3) - 1 ÷ (8 + 3)

= 11 - 1/11

= 10 10/11

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