Question

What is the value of (x3 +1) if x + 1 / x = -1?​

Answer 1

Answer:

zero

Step-by-step explanation:

(X3+ 1)

it can be written as:

=](x^3+1^3)

formula: (a^3+b^3=(a+b)(a^2+b^2+2ab)

=] {(x+1)[(x^2+(1)^2+2(x)(1)]}

=] (x+1)(x^2+1+2x)

{x= -1}

=] (-1+1)[(-1)^2+1+2(-1)]

=] (0)(1+1-2)

=] (0)(2-2)

=] (0)(0)

=] 0