23-06-2019
Mathematics

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if x=3+2root2,find the value of xsquare+1/xsquare

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Аноним Аноним

23-06-2019

Answer:

34.

Step-by-step explanation:

x = 3 + 2√2

x^2 = (3+2√)^2

= 9 + 8 + 12√2

= 17 + 12√2

x^2 + 1 /x^2

= (17 + 12√2)^2 + (1 / (17 + 12√2)

= 34.

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