1. Find the greatest common factor (GCF) What is the largest number that divides evenly into 4x^2, -16x^4, and 10x^5? It is 2. What is the highest degree of x that divides evenly into 4x^2, -16x^4, and 10x^5? It is x^2. Multiply the results above, the GCF = 2x^2
2. Factor out the GCF (Write the GCF first. Then, in parentheses, divide each term by the GCF.) 2x^2(4x^2/2x^2 + -16x^4/2x^2 + 10x^5/2x^2)
3. Simplify each term in parentheses 2x(2-8x^2+5x^3)