Respuestas

2013-10-27T03:59:25+01:00
01(5xy) (10x8y-9) = 50x2y + 40xy2 - 45xy = 90x2y2 - 45xy = 45x2y2
02(3x6y3) (4xy2) = 2 ( 12x2y2 + 24xy5) = 24x2y2 + 48xy5 =  72x2y5