1)Calcule as multiplicacôes de monômios. a)(-3m4).(5m7)=
b)(-5x6).(-7×2)=
c)(20m4).(-7m)=
d)(-50y3).(-4y6)=
e)(-6z9).(9z)=
f)(-15m4).(-9m5)=
g)(-8k3).(12k4)=
h)(15m5).(-3m3)=
i)(-7x6).(-9×)= J)(-8m7).(-9m3)=