How do you do this homework problem?

Question

Ok, well I know these are easy...

1. (x 1)^3

2. (n 2)^3

Could you give me step by step instructions on how to do these kind of problems?

Thanks!

Answer 1

Is it (x + 1)^3?  I've noticed the + sign tends to disappear on here.

That would be:

(x+1)(x+1)(x+1)

= (x² + 2x + 1)(x + 1)

= x³ + 2x² + x + x² + 2x + 1

= x³ + 3x² + 3x + 1

Just remember to multiply everything in one parentheses by everything in the other.

Answer 2

idk wat that is lol

Answer 3

If your just factoring out, do this...

(x+1)^3                  

(x+1) (x+1) (x+1)                   write out

(x^2+x+x+1) (x+1)                 FOIL the first two problems

(x^2+2x+1) (x+1)                   add like terms

(x^3+2x+x) + (x^2+2x+1)       distribute the two sets

x^3+3x^2+3x+1                     add like terms

FOIL: first outside inside last

hope i helped..

Answer 4

1.  start with the problame

(x+1)^3

2.  distribute the power-of-three

     x^3+1^3

3.  1 to the 3rd is the same as 1x1x1

     x^3+1*1*1

4.  answer is x to the 3rd plus 1  

     x^3+1

(n+2)^3        

n^3+2^3        

n^3+2*2*2    

n^3+8            

Answer 5

idk D: