The expression x^3-64 can be written as (x)^3-(4)^3. what is the factorization of x^3-64? a^3-b^3=(a-b)(a^2-ab+b^2) a) (x-4)(x^2+4x+8)b) (x-4)(x^2+4x+16)c) (x-4)(x^2+64x+16)d) (x-4)(x^2+64x+4096)