Reduce the rational expression to lowest terms. If it is already in lowest terms, enter the expression in the answer box. Also, specify any restrictions on the variable.

Question

6a^4+162a/3a^4-9a^3+27a^2

Answer 1

Get used to using parentheses online, ok?

(6a^4+162a) / (3a^4-9a^3+27a^2)
(6a)(a^3+27) / (3a^2)(a^2-3a+9)
Now think back on how to factor x^3 ± y^3
and you will see some factors drop out.