Question

x(x-3)= -1 then x cube+ 1 by x cube = ?

pls answer immedetly

Answer 1

hey your ans is here


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given:-
x(x-3)=-1

to find:-
x3+1/x3

now

x-3=-1/x
3=1/x+x

now apply

(x+1/x)3=x3+1/x3+3(x+1/x)
(3)3=x3+1/x3+3(3)
27-9=x3+1/x3
18=x3+1/x3

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