If x4+1/x4 =119 then find x3-1/x3
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x4+1/x4=119
=> x2+1/x^2=11
=> x-1/x=3
now ,
=> x3-1/x3=(x-1/x)3+3(x-1/x)
=27+9=36
=> x2+1/x^2=11
=> x-1/x=3
now ,
=> x3-1/x3=(x-1/x)3+3(x-1/x)
=27+9=36
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