Question

if x²-1/x = 8 find x³-1/x³​

Answer 1

Answer:

multiply by x from both sides in question..we get

x^3 -1 =8x

x^3 =8x + 1

put the value of x^3 in question..

(8x + 1) -1/(8x +1)

Step-by-step explanation:

taking l.c.m from both side,we get

64x^2 +1 - 8.