Question

Me pueden ayudar a resolverlo:
(9×y+7y)(5×y-3y)

Answer 1

Respuesta:

=32y2

Explicación paso a paso:

(9y+7y)(5y−3y)

=(9y+7y)(5y+−3y)

=(9y)(5y)+(9y)(−3y)+(7y)(5y)+(7y)(−3y)

=45y2−27y2+35y2−21y2

=32y2

Answer 2

(9xy + 7y)(5xy - 3y)

(9xy)(5xy) - (9xy)(3y) + (7y)(5xy) - (7y)(3y)

45x²y² - 27xy² - 35xy² -21y²  >>>Respuesta

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eso es todo :D

SALUDOS!!