Question

If X+1/X=5 find tge value of X^3+1/X^3

Answer 1

Step-by-step explanation:

x+1/x=5

cubing on both sides

(x+1/x)³=5³                           (a+b)³=a³+b³+3ab(a+b)

x³+1/x³+3*x*1/x(x+1/x)=125

x³+1/x³+3(5)=125                  ∵x+1/x=5

x³+1/x³+15=125

x³+1/x³=125-15

x³+1/x³=110

Answer 2

answer full question yr