Question

Multiply (−4)(−2)(−5).

−40
−8
8
40

Answer 1

multiply those 4 numbers?

Answer 2

Multiply all the numbers without the signs first
4 x 2 x 5=?

Answer 3

40?

Answer 4

it is a fact that only binary operations can be performed

Answer 5

yep and since there is an odd number of negatives the answer must be negative

Answer 6

so -40

Answer 7

Yep

Answer 8

it does not matter which order you perform these operations, you will still come up with the same answer e.g
(-4)(-2) = 8(-5) = -40
or
(-2)(-5)=10(-4) = -40

Answer 9

which pooja195 knows is the prinicple of commutativity