4(3x+7y)multiplication 5y(4+7x)
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4(3x+7y) × 5y(4+7x)
(12x + 28y)×(20 y+35xy)
240xy+420x²y+560y²+980xy²
(12x + 28y)×(20 y+35xy)
240xy+420x²y+560y²+980xy²
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