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a) 5x³ - 10xy factor común 5x sacamos afuera
5x(x² -y)
b) 4mn -16n factor común 4n
4n (m-4)
c) 9y³ - 2y
y( 9y²-2)
e)x(a+1) -3(a+1) factor común (a+1)
(a+1)(x-3)
6ax + 3x+1+2a
agrupamos
(6ax+3x ) + (2a+1)
3x(2a +1) + (2a+1)
(2a+1)(3x+1)