Question

How do you multiply integers?

Answer 1

What class is this for, number theory, or Algebra?

Answer 2

+x+=+
-x-=-
+x-=-
-x+=-

Answer 3

+(positive)
-(negative)
x(multiply)

Answer 4

I'm doing easy stuff, just i need to know whats right before i do anything ; but 2x3=6 or something like -5x-6 it's just the beggining of the year for 7th grade

Answer 5

All right, then, yeah, @tomorego 's response will serve you well.

Answer 6

I didn't understand it , Like what does he mean ; Example?

Answer 7

So, let's say we have two numbers, (for example, 3 and 4) and both of them are positive, then, as I'm sure you know:
\[
3\cdot4=12
\]Now, what if we have -3? We then do:
\[
-3\cdot 4=-12
\](Imagine adding \(-3\) four times, like: \(-3+-3+-3+-3=-12\)). Since one of the two numbers is negative, then your result is negative. Similarly, for -4:
\[
3\cdot-4=-12
\]Again, imagine adding \(-4\) three times.
But, here's where it gets weird, if we multiply two negative numbers together, we get:
\[
-3\cdot-4=12
\]A positive number! It's a little weird, but it starts making sense once you play with this stuff for a while, so I recommend you start remembering these rules, they're not difficult, just odd to get used to.

Answer 8

+x+=+, 2x2=4
-x-=+, -2x-2=4
+x-=-, 2x-2=-4
-x+=-, -2x2=-4