Question

which is a factored form of 8x^3+27

Answer 1

this is a sum of cubes

Answer 2

we know a sum of cubes
can be factored like so:
\[a^3+b^3=(a+b)(a^2-ab+b^2)\]

Answer 3

you have
\[(2x)^3+(3)^3\]
so a is?
and b is?

Answer 4

once you have identify what's what
plug into the formula I gave you to get the factored form of the expression you intended to factor