This is a rule, you can take -1 outside and make sure you just flip the signs of the terms inside. You can use this rule to change the signs of the terms if needed.
I have used the method of factoring to solve. In that particular problem (Check 2) it is possible to divide directly by 16 and get the factor, but for other numbers it may not be a factor so it is useful to know the method.
![Factoring Quadratic Trinomials [Module 11 Lesson 6]](http://i.ytimg.com/vi/ty3glVFI91c/mqdefault.jpg)
![Factoring Quadratic Trinomials [Module 11 Lesson 6]](/img/tr.png)
![Factoring Special Products [Module 11 Lesson 7]](http://i.ytimg.com/vi/i_XIyN4lMFw/mqdefault.jpg)
Thank you so much
It is my pleasure 😊
in 22:41, how is 3 from (6u +15)
Since 3 is a common multiple in both 6 and 15 we use 3 as the LCD and the term can be written as 3 (2u + 5).
26:14 I didn't understand how I take -1 outside
This is a rule, you can take -1 outside and make sure you just flip the signs of the terms inside. You can use this rule to change the signs of the terms if needed.
2:51 How do I put it in the calculator?
why didnt we divide 16t by 112t in this equation 16:31
I have used the method of factoring to solve. In that particular problem (Check 2) it is possible to divide directly by 16 and get the factor, but for other numbers it may not be a factor so it is useful to know the method.
its so hard and confusing
Try to understand the method and solve more problems by yourself. It will get easy eventually.
ok thank you teacher@@bestmathuae