Question

sum or difference of Cubes: x^3 -8 sum or difference of Cubes: x^3 -8 @Mathematics

Answer 1

this is a difference of cubes

Answer 2

and it factors to...

=(x-2)(x^2+2x+4)

Answer 3

wait how does that work out....

Answer 4

consider this: a^3+b^3=(a-b)(a^2+ab+b^2)

Answer 5

sorry but that is confusing the hell out of me.... are you cubing the original.... is that allowed???

Answer 6

remember that factoring is the opposite operation to multiplication; if you mutliply the right side of the equation that lagrange gave you (or the one that I gave you) you get the sum of cubes

Answer 7

sums/difference factor according to a "formula" that you have to memorize; tere is no method like some other factoring

Answer 8

i meant to write "sums/differences of cubes" on the last post

Answer 9

i think i get it now...

Answer 10

cool beans :})

Answer 11

x^3-2^3 = (x-2)*(x^2 + 4x + 4)