(2x-2/x)^3

Asked by shahmishit | 23rd Apr, 2019, 06:27: PM

Expert Answer:

begin mathsize 16px style open parentheses 2 straight x minus 2 over straight x close parentheses cubed
equals left parenthesis 2 straight x right parenthesis cubed minus 3 cross times left parenthesis 2 straight x right parenthesis squared cross times 2 over straight x plus 3 cross times 2 straight x cross times open parentheses 2 over straight x close parentheses squared minus open parentheses 2 over straight x close parentheses cubed
equals 8 straight x cubed minus 12 straight x squared plus 6 straight x cross times 4 over straight x squared minus 8 over straight x cubed
equals 8 straight x cubed minus 12 straight x squared plus 24 over straight x minus 8 over straight x cubed
open parentheses 2 straight x minus 2 over straight x close parentheses cubed equals 8 straight x cubed minus 12 straight x squared plus 24 over straight x minus 8 over straight x cubed end style

Answered by Sneha shidid | 24th Apr, 2019, 09:17: AM