\(M=\left(-2x^3y\right).\left(-3x^2y^3\right)=\left[\left(-2\right).\left(-3\right)\right]\left(x^3.x^2\right)\left(y.y^3\right)=6x^5y^4\)
Bậc:9
Hệ số:6
\(N=\left(-3x^2y\right)^2.\left(-5xy^3\right)=9x^4y^2.\left(-5\right)xy^3=\left[9.\left(-5\right)\right]\left(x^4.x\right)\left(y^2.y^3\right)=-45x^5y^5\)
Bậc:10
Hệ số:-45