To factor out the greatest common factor (GCF) from the polynomial \( 10h^8 + 10h^5 \), we can first identify the GCF of the two terms.
- The GCF of the coefficients \( 10 \) and \( 10 \) is \( 10 \).
- The GCF of \( h^8 \) and \( h^5 \) is \( h^5 \) (we take the lower power of \( h \)).
Now we can factor out the GCF, which is \( 10h^5 \):
\[ 10h^8 + 10h^5 = 10h^5(h^3 + 1) \]
Therefore, the factored form is:
\[ 10h^5(h^3 + 1) \]