Respuesta :

Given:

There are given that the expression:

[tex]-9b(a+4b)[/tex]

Explanation:

Multiply -9b into the value of bracket.

So,

[tex]-9b(a+4b)=-9ab-36b^2[/tex]

Final answer:

Hence, the equation is shown below:

[tex]-9ab-36b^2[/tex]

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