Question

If x(x+1)=1 when, (x+1)^3-1/(x+1)^3=?​

Answer 1

Answer:

x(x+1) = 1

Then, x+1 = $\frac{1}{x}$

Put the above substitution in the equation and we get,

$\frac{1}{x^{3}}$ - $x^{3}$

Step-by-step explanation: