Answer:
7. [tex]4ac^{2} b-6a^{3} c+11a^{5} c^{3} b^{5}[/tex]
8. [tex]9a+5c[/tex]
9. [tex]a^{4} -a^{2} b^{2} +b^{4}[/tex]
10. factor by grouping
[tex]\frac{6w^{3}+7w^{2}-12w +15 }{(w-1)(2w+5)}[/tex]
Step-by-step explanation:
