Answer:
4x - 12y
Explanation:
In order to expand brackets you have to multiply everything in the brackets by what is outside the brackets
Therefore:
4 x x = 4x
4 x - 3y = - 12y
Put this together and you end up with 4x - 12y
Hope this helps
4x-12y supongo que sí es la respuesta que buscas
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