anonymous
  • anonymous
Why does a negative times a negative equal a positive? BTW don't use (-) x (-) in explanation
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
dumbcow
  • dumbcow
multiplication is a series of additions 2*4 = 2+2+2+2=8 you add 2 four times if its -2*4, then you add -2 four times -2 -2 -2 -2 = -8 when its -2*-4, then you add -2 (neg four) times but that doesn't make sense , you can't add something negative times but you can think of it as subtracting -2 four times subtracting -2 is same as adding positive 2 -2*-4 = 2+2+2+2 = 8
ash2326
  • ash2326
Suppose you have \[4\times 4\] We know both the no.s are positive and the product will also result in a positive no. We know by basic math that \[\frac{1}{-1}=-1\] Now in our multiplication We can divide and multiply by an no. and it won't affect our result So we choose -1 . We multiply and divide by -1 and this won't change our result so \[\frac{-1}{-1} \times 4\times 4\] Now \(-1 \times 4= -4\) so we have now \[\frac{-4}{-1} \times 4\] We know that \[\frac{1}{-1}=-1\] so \[-4 \times -1 \times 4\] so we have now \[-4 \times - 4\] but we know that result is 16 so this implies \[- \times -\ is\ +\]
experimentX
  • experimentX
Here's explanation from Group theory. set of real numbers is a group under operation of addition and multiplication. if 'a' be any element of G then, '-a' is additive inverse of 'a'. let '-a' be represented by 'b' which is also belongs to set G (from closure property) so 'b' in turn has additive inverse '-b' as we know in group, an element always has unique inverse, so inverse of b is -a or -(-a) = a hence we can prove that -x-=+

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

experimentX
  • experimentX
in other words, inverse of a inverse in itself. so, -x- must result to +
hoblos
  • hoblos
explanations given do the job of explaining but an example from real life may be good.... so If I say "go" I am encouraging you to go (positive), but if I say "do not go" I am encouraging you to stay which is the opposite (negative). Now if I say "Do NOT not go", I am saying I don't want you to stay, so I am back to saying "go". So, two negatives make a positive
anonymous
  • anonymous
Yeah I heard that one, seems strange to use language logic in maths though.
anonymous
  • anonymous
The negative acts as an inverter.
hoblos
  • hoblos
well it depends on the person.. some people find it easier to understand language logic though... anyway you got several ways of explanations here that can help you get the idea hopefully you got what you needed XD

Looking for something else?

Not the answer you are looking for? Search for more explanations.