20. completely factor the expression c5d3e7 + c2d2e2.

Explanation:

Step1: Find the GCF of terms

The GCF of (c^{5}d^{3}e^{7}) and (c^{2}d^{2}e^{2}) is (c^{2}d^{2}e^{2}).

Step2: Factor out the GCF

(c^{5}d^{3}e^{7}+c^{2}d^{2}e^{2}=c^{2}d^{2}e^{2}(c^{3}d e^{5} + 1))

Answer:

(c^{2}d^{2}e^{2}(c^{3}d e^{5}+1))