Question

Answer 1

\(M=6x^5y^4\)

bậc 9 ; hệ số 6 

\(N=\left(9x^4y^2\right)\left(-5xy^3\right)=-45x^5y^5\)

bậc 10 ; hệ số -45 

Answer 2

\(M=\left(-2x^3y\right).\left(-3x^2y^3\right).\\ =6x^5y^4.\)

Bậc 5.

\(N=\left(-3x^2y\right)^2.\left(-5xy^3\right).\\ =9.x^4y^2.\left(-5\right).x.y^3=-45.x^5y^5.\)

Bậc 5.