Question

If x=9-45 ,then find x^3+1/x^3​

Answer 1

Answer:

We have,

x=9−45x1=9+45

Therefore,

x−x1=−85

x+x1=18

Since,

x3−x31=(x−x1)(x2+x21+1)=(−85)⎣⎢⎡(x+x1)2−1⎦⎥⎤=(−85)[323]=−25845

Hence, this is the answer.