Question

efetue as multiplicações a)(-4)•(-5)•(+2)= b)(-7)•(+2)•(-1)= c)(-1)•(-4)•(+3)•(-2)= ​

Answer 1

a ) (-4)×(-5)×(+2)

(-4)×(-5)=(+20)

+20×(+2)= 40

b) (-7)×(+2)×(-1)

(-7)×(+2)= (-14)

(-14)×(-1)= (+14)

c) (-1)×(-4)×(+3)×(-2)

-1×(-4)= (+4)

+4 × (+3) = 12

+ 12 × (-2) = (-24)