Question

How do you factor this? I know the formula, but i couldnt seem to get the right answer
http://i.imgur.com/cNCO7.png

Answer 1

= (2^3*s^3 - 5^3*t^3) = ((2*s)^3 - (5*t)^3)

Answer 2

now use the fact that (a^3-b^3) = (a-b)(a^2+ab+b^2).

can you get it from here?

Answer 3

where a = 2s and b = 5t

Answer 4

make sense @strawhatrobbie ?

Answer 5

so would the a^2 part be 4s^2

Answer 6

correct

Answer 7

@zzr0ck3r well, is the the answer (2s-5t)(4s^2+10st+25t^2)