Verified answer

Factoring out x*y*z gets you

5x2y6z4 - 15x4y5z3 + 20x3y5z2

=xyz(5*2*6*4 - 15*4*5*3 + 20*3*5*2)

=xyz(240 -900 +600)

=xyz(-60)

=-60xyz

Hope this helps!

Factor out a 5x^2y^5z^2

5*x^2*y^5*z^2(y*z^2 - 3x^2*z + 4x)

5x^2y^6z^4 - 15x^4y^5z^3 + 20x^3y^5z^2

= 5(x^2y^6z^4 - 3x^4y^5z^3 + 4x^3y^5z^2)

= 5x^2y^5z^2(yz^2 - 3x^2z + 4x)

no thanks. do your own homework