Answer:
Step-by-step explanation:
First multiply 9x3
=[tex]27xy^4x^3y[/tex]
give the terms that dont have a exponent a 1
=[tex]27x^1y^4x^3y^1[/tex]
Multiply terms with the same base
[tex]27x^{1+3} y^4x^3y^1[/tex]
Multiply terms of same base
[tex]27x^{1+3}y^{4+1}[/tex]
Just add all the exponents
[tex]27x^{4}y^{5}[/tex]
