Work Step by Step
The GCF of the two terms is $3x^3y^4$. So $15x^4y^6-3x^3y^5+12x^4y^4=3x^3y^4\cdot5xy^2-3x^3y^4\cdot(y)+3x^3y^4\cdot4x=3x^3y^4(5xy^2-y+4x)$
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