Answer :
Final answer:
To simplify the expression -4x²(3x - 7), distribute the -4x² to both terms inside the parentheses and simplify each term.
Explanation:
To simplify the expression -4x²(3x - 7), we need to distribute the -4x² to both terms inside the parentheses. This gives us -4x² * 3x and -4x² * -7. Simplifying each term, we get -12x³ + 28x². Therefore, the correct answer is -12x³ + 28x².
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