## Algebra 1: Common Core (15th Edition)

Split the expression into two trinomials, find the GCF for both, and then factor. $...=(6x^{5}+12x^{3}+9x)+(4x^{4}+8x^{2}+6)$ $=3x(2x^{4}+6x^{2}+3)+2(2x^{4}+6x^{2}+3)$ .... and factor out the common trinomial $=(2x^{4}+6x^{2}+3)(3x+2)$