To factor the expression \(30a^3 + 40a^5\), we first need to identify the greatest common factor (GCF) of the coefficients and the variable terms.
- The coefficients are 30 and 40. The GCF of 30 and 40 is 10.
- The variable terms are \(a^3\) and \(a^5\). The GCF for \(a^3\) and \(a^5\) is \(a^3\).
Now, we can factor out \(10a^3\) from the original expression:
\[ 30a^3 + 40a^5 = 10a^3(3 + 4a^2) \]
Therefore, the correct response is:
10 a superscript 3 baseline left parenthesis 3 plus 4 a superscript 2 baseline right parenthesis.