if x + 1/x = 6 , find the value of x^3 - 1/x^3
Answers
Answered by
0
(x+1/x)^2=6^2
x^2+1/x^2+2x1/x=36
(x*1/x cancels out)
then we are left with...
x^2+1/x^2+2=36
x^2+1/x^2=36-2
x^2+1/x^2=34
his should be the ans if we will square it..
x^2+1/x^2+2x1/x=36
(x*1/x cancels out)
then we are left with...
x^2+1/x^2+2=36
x^2+1/x^2=36-2
x^2+1/x^2=34
his should be the ans if we will square it..
gunjan010773p2afz3:
ur answer is wrong it should be 140√2
i did squaring not cubing..
do cubing
u didn't read d question carefully
Similar questions