1.
a)
[tex]\frac14a*(-4a)*b=-a^2b[/tex]
b)
[tex]-3x*(-2x)*x=6x^2*x=6x^3[/tex]
c)
[tex]\frac12b*2b*3c=b^2*3c=3b^2c[/tex]
d)
[tex]5x*(-3y)*2xy=-15xy*2xy=-30x^2y^2=-30(xy)^2[/tex]
2.
[tex]-3c, -c, -4c, -2c, 10c\\2yx, 5yx, -9yx, yx, -yx, yx\\x^3, 2x^3, 3x^3, -x^3[/tex]
