Respuesta :

Let's recall one of the properties of exponents:

[tex]x^4\ast x^5=x^{4\text{ + 5}}=x^9[/tex]

Therefore, in our exercise we have:

[tex]4y\text{ }\ast2y^3=8y^{4\text{ }}andv^2\ast4v^7=4v^9[/tex][tex]8y^4\ast4v^9=32y^4v^9[/tex]

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