Practice Test
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When multiplying real numbers, the product will be positive if the signs are the same and it will be negative if the signs are different.
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When multiplying real numbers, the product will be positive if the signs are the same and it will be negative if the signs are different.
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Same Sign & Different Signs
(+)(+)=(+) & (+)(-)=(-)
(-)(-)=(+) & (-)(+)=(-)
We can verify this using a calculator.
| Associative Property | (a* b)* c = a* (b* c) |
|---|---|
| Commutative Property | 3a* b = b * a |
Let's look at how the Associative Property can help us understand the given exercise.
Rewrite negative as -1
Associative Property of Multiplication
Multiply
Multiply