7. Simplify:
(7x – 2y)(49x2 + 14xy + 4y2)
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Step-by-step explanation:
(7x - 2y) (49x² + 14xy + 4y²)
343x³ + 98x²y + 28xy² - 98x²y - 28xy² - 8y³
343x³ - 8y³
is the solution
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