Question

multiplique:
a) (-3) x (-5)
b) (-2) x (-6)
c) 3 x 0
d) 4 x (-2)
e) (-8) x (-8)

Answer 1

A) 15
B) 12
C) 0
D) -8
E) 64

Answer 2

Regra dos sinais:

( + ) × ( + ) = +

( - ) × ( - ) = +

( + ) × ( - ) = -

( - ) × ( + ) = -

multiplique:

a) (-3) x (-5) = + 15

b) (-2) x (-6) = + 12

c) 3 x 0= 0

d) 4 x (-2) = - 8

e) (-8) x (-8) = + 64