Question

Find the greatest common factor of 15x^2 y^3 and -20x^3 yz

Answer 1

$15x^2y^3=\boxed{5x^2y}\cdot3y^2\\\\-20x^3yz=\boxed{5x^2y}\cdot(-4xz)\\\\GCF(15x^2y^3;\ -20x^3yz)=\boxed{5x^2y}$