$$13 x y + 2 y z , 5 y x - 2 x z 4 x y + 3 z x$$
$xy\left(13x+2z\right)\left(2xyz_{4}-5y-3z\right)$
$$xy\left(13x+2z\right)\left(2xyz_{4}-5y-3z\right)$$
$$-65x^{2}y^{2}-6xyz^{2}-10xzy^{2}-39yzx^{2}+4zz_{4}x^{2}y^{2}+26z_{4}y^{2}x^{3}$$
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$y\left(13x+2z\right),x\left(3z+5y-2xyz_{4}\right)$
