Question

(X+1)^3+(x-1)^3 please solve this question ka answer​

Answer 1

Answer:

2x³+6x

Step-by-step explanation:

(x+1)³+(x-1)³

⇒ Let (x+1)=a and (x-1)=b

now ,

a³+b³

= (a+b)(a²-ab+b²)

=(x+1+x-1){(x+1)²-(x+1)(x-1) +(x-1)²}

=2x { (x²+2x+1)-(x²-1)+(x²-2x+1)}

=2x{x²+2x+1-x²+1+x²-2x+1}

=2x{x²+3}

=2x³+6x (Ans).

Hope this will help you.