. Add 5y(y - 2z) to the product of 4yz and 6y(2y + z).
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Step-by-step explanation:
[5y(y-2z)][(4yz)6y(2y+z)]
[5y²-10yz][24y²z(2y+z)]
[5y²-10yz][48y³z+24y²z²]
240y⁵z+120y⁴z²-480y⁴z²-240y³z³
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