Question

Calcula:
A). (+4)*(+2)*(-9)
B)(-4)*(+1)*0
C)(-3)*(+4)*(-7)
D) (+3)*(-5)*(+2)

Answer 1

$A)(+4)*(+2)*(-9)= (+8)*(-9) = \boxed{-72} \\ \\ B)(-4)*(+1)*0= (-4)*0= \boxed{0} \\ \\ C)(-3)*(+4)*(-7) = (-12)*(-7)= \boxed{+84} \\ \\ D) (+3)*(-5)*(+2)= (-15)*(+2)= \boxed{-30}$

Espero que te sirva, salu2!!!!