Factoring the followings

1. 6ab³+3a²b⁴-9a²b²
2. 
3. 
4. (Difference of Squares)
5. 
6. 
7. 
8. 
9. 

Sum and Difference of Cubes

Evaluating the following expressions by using a proper formula. (Recall 15²,25²,35²,45², and etc.)

1. 
2. 
3. (use ).
4. 

 
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