simplify it. please answer if you can understand it. and if don't the no need to type anything else.
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Answer:
-3y (4y+3x)+2x (x^2-y)
=-12y^2-9xy+2x^3-4x
=-12y^2+2x^3-11xy
a^3b (a^2-2a)+2ab (a^3-1)
=a^5b-2a^4b+2a^4b-2ab
=a^5b-2ab
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