When multiplyingreal numbers, the product will be positive if the signs are the same and it will be negative if the signs are different. Start with multiplying the first two numbers. Then multiply the new number by the third one.
- 729
Practice makes perfect
When multiplyingreal numbers, the product will be positive if the signs are the same and it will be negative if the signs are different.
cc
Same Sign & Different Signs
(+)(+)=(+) & (+)(-)=(-)
(-)(-)=(+) & (-)(+)=(-)
In our case, there are three negative numbers. We will start by multiplying the first two. They are both negative, so the product will be positive.
Next, we will multiply the new number, 81, by the remaining - 9. In this case one number is positive and one number is negative, so the product will be negative.
