Answer:
A
Step-by-step explanation:
the denominators have to be the same so multiply each side by the each other, 1/2x^3-4 × 3x^3-6/3x^3-6 and 3/3x^3-6 × 2x^3-4/ 2x^3-4. multiply the denominator to get 6x^6 + (-24x) +24. Multiply each numerator to get 3x^3-6 - 6x^3-12. and that equals -3x^3+6. giving you both the numerator and denominator
