Question

спасите пж!!!!!!!!!!!!!!

Answer 1

$\displaystyle 6x^3y+12y^2z^2+9y^3+8x^3z^2=3y(2x^3+3y^2)+4z^2(3y^2+2x^3)=(2x^3+3y^2)(3y+\\ \\ 4z^2)$