\(\left(-x^2y^3\right)^2\left(\frac{1}{2}x^2y\right)^3\)
\(=\left(x^4y^6\right)\left(\frac{1}{8}x^6y^3\right)\)
\(=\left(1.\frac{1}{8}\right)\left(x^4x^6\right)\left(y^6y^3\right)\)
\(=\frac{1}{8}x^{10}y^9\).
\(\Rightarrow\)Bậc là 19
=\(-x^{2.2}y^{3.2}.\left(\frac{1}{2}\right)^2x^{2.3}y^3\)
=\(-x^4y^6.\frac{1}{4}x^6y^3\)
= \(\frac{1}{4}x^4x^6y^6y^3\)
= \(\frac{1}{4}x^{10}y^9\)
Bậc: 19