|
|
|
|
 | |  |
| when you add two numbers that have the same sign the answer is positive... | |
 | |  |
|
 |
| | |
| oh, now i know that but do you know that when you add two numbers that are different signs the answer is negative... | |
| | |
|
|
|
|
|
|
|
| | |
| hey do you know that when you multiply the exponents are still the same.... | |
| | |
|
 |
| | |
| oh, but will it change when the problem is division? | |
| | |
|
|
|
|
|
|
|
| | |
| how do you subtract two numbers that are variables? | |
| | |
|
 |
| | |
| you have to change the second number then you add the number and copy the sign.... | |
| | |
|
|
|
