20. If x=
5-√21/2,then prove that(x^3+1/x^3)^-5(x^2+1/x^2)+(x+1/x)=0.​

1 thought on “20. If x=<br />5-√21/2,then prove that(x^3+1/x^3)^-5(x^2+1/x^2)+(x+1/x)=0.​”

1. Answer:

   pua sethipain ta abe late hela ans daba pain .. tu jemiti kahilu ki 4 min re asuchi mu gali heri khaibaku !! hahahahahaha..

   kn khauchu ??

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