(3x² + 4x + 7) (x-7)
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Answer:
3x³-17x²-21x-49
Step-by-step explanation:
x(3x²+4x+7)-7(3x²+4x+7)
3x³+4x²+7x-21x²-28x-49
=)3x³-17x²-21x-49
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