Multiplying Rational Expressions | MathHelp.com - By MathHelp.com
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| 00:0-1 | Just like simplifying rational expressions when multiplying two rational expressions | |
| 00:06 | together , always try to factor before you do any | |
| 00:10 | canceling . So here notice that the denominator of our | |
| 00:15 | first expression factors and we have five X to the | |
| 00:20 | 5th over X plus four times X plus three in | |
| 00:30 | the second expression noticed that the numerator factors and we | |
| 00:34 | uh x minus five Times X-plus four Over 10 X | |
| 00:44 | to the 3rd . Now we can cancel And cross | |
| 00:50 | canceling the five and 10 . We have one and | |
| 00:55 | 2 . And remember X the fifth over X . | |
| 00:59 | The third is X the five minus three or X | |
| 01:06 | squared . And cross canceling the other way notice that | |
| 01:12 | the X plus four is canceled to simplify from here | |
| 01:18 | , simply multiply across the numerator and multiply across the | |
| 01:23 | denominator . So we have x squared times X -5 | |
| 01:32 | over two times x plus three . |
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