If x² + 1 = x, then Find x³ + 2/x³ =?
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mvishnu710:
ans is -1
this is by my method
X²+1=x... (1)
*x -->x³+x=x²... (2)
1+2
X²+1+x³+x=x+x²
X³+1=0
X³ =-1
..
*x -->x³+x=x²... (2)
1+2
X²+1+x³+x=x+x²
X³+1=0
X³ =-1
..
ok
if you have your answer you can solve
ha.
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