Question

if x-1/x=3, then find x square+1/x square

Answer 1

Hey !


Here is your answer !
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➡[ x - 1 / x ] ^2 = x^2 + 1 / x^2 - 2

➡[ 3 ] ^2 + 2 = x^2 + 1 / x^2

➡x^2 + 1 / x^2 = 11


Hence your answer is 11

Hope it helps !!☺
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Answer 2

hey your ans is here

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given

x-1/x=3

to find

(x+1/x)2

now using identity

(x-1/x)2=x2+1/x2-2

so

(3)^2=x2+1/x2-2
9=x2+1/x2-2
9+2=x2+1/x2
11=x2+1/x2
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