Why is the product of :
1) a +ve no. & a +ve no., a +ve no.
2) a +ve no. & a -ve no., a -ve no.
3) a -ve no. & a -ve no., a +ve no.
2007-02-01 19:14:34 · 7 answers · asked by Kristada 2 in Science & Mathematics ➔ Mathematics
"+ve" means "positive" & "-ve" means "negative"
2007-02-01 19:37:36 · update #1
Multiplication is just repeated addition
1)
A and B are positive integers
AB = A + A + A + A + A.... (B times)
You are adding lots of positive numbers, hence it will end positive
2)
A and B are positive integers. Therefore -A is negative. -A = -1*A
-A*B = -1*A*B = -1(A + A + A + A + A.... (B times) )
You will therefore end with negative of a positive number (from part (1) which will be negative
3)
A and B are positive integers. Therefore -A and -B are negative. -A = -1*A, -B = -1*B
-A*-B = -1*A*-1*B = -1(-1(A + A + A + A + A.... (B times) ))
You will therefore end with negative of a negative number (from part (2) which will be positive
2007-02-01 19:27:28 · answer #1 · answered by Tom :: Athier than Thou 6 · 0⤊ 0⤋
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2016-12-17 07:39:46 · answer #2 · answered by ? 3 · 0⤊ 0⤋
that's not even math. Are those variables? Are we suposed to know what "+ve" means?
2007-02-01 19:18:31 · answer #3 · answered by Qwyrx 6 · 0⤊ 1⤋
?what do you mean by ve?
2007-02-01 19:33:46 · answer #4 · answered by happyrabbit 2 · 0⤊ 1⤋
Yes.. that is correct
+ * - = -
+ * + = +
- * - = +
2007-02-01 19:18:06 · answer #5 · answered by Michael Dino C 4 · 0⤊ 0⤋
[a a a] [- a a -a]
[a -a -a] [a -a a]
[-a -a a] [-a a -a-
solve it
2007-02-01 19:20:27 · answer #6 · answered by jaya prakash 2 · 0⤊ 0⤋
???
wtf that's not basic!
2007-02-01 19:17:03 · answer #7 · answered by Anonymous · 0⤊ 0⤋