Plz solve this question in 2 ways or many as possible ?
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(z-1/z)^2=z^2-(1/z)^2-2
(z-1/z)^2=11-2
(z-1/z)^2=9
z-1/z=3
(z-1/z)^3=z^3-(1/z)^3-3(z-1/z)
3^3=z^3-(1/z)^3-3*3
z^3-(1/z)^3=27-9
z^3-(1/z)^3=18
(z-1/z)^2=11-2
(z-1/z)^2=9
z-1/z=3
(z-1/z)^3=z^3-(1/z)^3-3(z-1/z)
3^3=z^3-(1/z)^3-3*3
z^3-(1/z)^3=27-9
z^3-(1/z)^3=18
Rudra18328:
Sorry bro wrong answer
the answer is 46
sorry 36
I forgot to do it correctly but I can do
it will be 27+9=36
but I wrote 27-9
there was the error
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