19) (0,6)^2xxx^2y \(\cdot\) \(-\frac{1}{6}\) xy \(\cdot\) (-100)y^2

19)

\( (0.6)^2xxx^2y (-\frac{1}{6}) xy (-100)y^2 = 0.36x^3y (-\frac{1}{6}) xy (-100)y^2 = (0.36 -\frac{1}{6} -100)x^{3+1}y^{1+1+2} = (\frac{0.36}{6} 100)x^4y^4 = (0.06 100)x^4y^4 = 6x^4y^4 \)