Question

Ayudame porfavor

c) (xy - y)(3xy)
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Answer 1

$(3xy)(xy - y) \\ (3xy)(xy) - (3xy)(y) \\ 3 {x}^{2} {y}^{2} - 3x {y}^{2} \\ \\ podemos \: factorizar \\ 3 x{y}^{2} ({x} - 1)$