Question

if multiplication is nothing but a series of additions, then why adding two negative numbers produces a negative while multiplying two negative numbers gives a positive result ?

Answer 1

why negative times negative is a positive

Answer 2

Adding two negative numbers is the same as multiplying one negative number by a positive number, viz. 2.

Answer 3

Multiplying two negative numbers is positive because negative means opposite, so you are getting the opposite of a negative number, which is positive.

Answer 4

(-5) + (-5) = 2x (-5)

so adding 2 -ve numbers is same as multiplying a negative number by 2

Answer 5

adding 2 +ve numbers is also same as multiplying a positive number by 2

Answer 6

why negative times negative is a positive because