Question

simplify x^3-27

Answer 1

just use the formula a^3-b^3, i don't even remember what it was, look up difference of cubes
x^3-3^3

Answer 2

you mean "factor" right?

Answer 3

\[a^3-b^2=(a-b)(a^2+ab+b^2)\]
\[x^3-27=(x-3)(x^2+3x+9)\]

Answer 4

this is "factoring" not "simplifying? there is nothing simpler about the factored form