URJENT
X-1/x=3 then find (x^3+1/x^3) URGENT PLZ
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(x-1/x)²=x²+1/x²-2
3²=x²+1/x²-2
x²+1/x²=9+2=11
(x+1/x)²=x²+1/x²+2
=11+2=13
x+1/x=√13
x³+1/x³=(x+1/x)(x²+1/x²-2)
=√13(9-2)=√13×7=7√13
3²=x²+1/x²-2
x²+1/x²=9+2=11
(x+1/x)²=x²+1/x²+2
=11+2=13
x+1/x=√13
x³+1/x³=(x+1/x)(x²+1/x²-2)
=√13(9-2)=√13×7=7√13
mithileshsharmp9dt2e:
Reqd question carefully
Options are 18,27,24,32
i hv checked my solution
its crct
u can also see tagt its crct
if there is any mistake then ill definitely make ut crct
it*
I am telling that options are a. 18 b 32 c 27 d 24
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