Question

if x=3-2sqrt(2) then find a)x^2+1/x^2 b)x^2-1/x^2 c)x^3+1/x^3 d)x^3-1/x^3

Answer 1

Answer:

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Step-by-step explanation:

x=3+2

2

x

1

=

3+2

2

1

×

3−2

2

3−2

2

=3−2

2

(

x

−

2

1

)

2

=x+

x

1

−2

=3+2

2

+3−2

2

−2=4

So,

x

−

x

1

=

4

=±12 Ans