Question

help please

Answer 1

what's the question here...

Answer 2

It looks like we should factor the expressions.

Answer 3

Hint: use difference or sum of cubes for the bonus

Answer 4

Difference of squares: 2d
Difference of cubes: 3d
1:2d
2:3d
3:2d
4:3d
5:2d
6:3d
7:2d
8:3d
9:impossible
10:3d

Answer 5

It's only 2 formulas over and over again

Answer 6

edit: 9:2d

Answer 7

Corrected and enlarged because 2 and 3 look the same in normal size:
\[\Large r^2-s^2=(r-s)(r+s)\]\[\Large r^3-s^3=(r-s)(r^2+rs+s^2)\]

Answer 8

you're right

Answer 9

@JoelSjogren don't delete your mistakes -_-

Answer 10

it makes me seem like talking to ghosts + mistakes are an essential step to learning

Answer 11

ok, I won't in the future.

Answer 12

thanks :)