Final answer:
The expression -3x² - 12 is equivalent to (-3x-6)(x+2), as expanded form of this expression matches the original expression.
Step-by-step explanation:
To find the expression equivalent to -3x² - 12, we need to factor the expression. The correct answer choice is (D) (-3x-6)(x+2). When we expand this expression, we get -3x² -6x + 2x + 12. Simplifying further, we have -3x² -4x + 12, which is equal to the original expression.
Learn more about expanding expressions