Answer
12$x^{5}$ + 8$x^{4}$ - 20$x^{3}$ + 4$x^{2}$
Work Step by Step
1. Apply the distributive property.
4$x^{2}$(3$x^{3}$ + 2$x^{2}$ - 5x + 1) = 4$x^{2}$(3$x^{3}$) + 4$x^{2}$( 2$x^{2}$) + 4$x^{2}$(-5x) + 4$x^{2}$(1)
2. Multiply.
12$x^{5}$ + 8$x^{4}$ - 20$x^{3}$ + 4$x^{2}$