Question

I cant figure out how to simplify this problem please help!

a^4-81
___________

5a-15

Answer 1

that means over

Answer 2

\[ \frac{a^4-81}{5a-15}=\frac{\color{blue}{(a^2-9)}(a^2+9)}{5(a-3)}=\frac{\color{blue}{(a-3)(a+3)}(a^2+9)}{5(a-3)}=\frac{(a+3)(a^2+9)}{5}\]

Answer 3

that isnt the awnser

Answer 4

Maybe your answer has the numerator multiplied out ?

Answer 5

\[ \frac{a^3+3a^2+9a+27}{5}\]?