simplifying polynomial expressions
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1 Answer

This is the same as -2(3x-4)²-(3x-4)(1+2x)=

-(3x-4)(2(3x-4)+1+2x)=-(3x-4)(6x-8+1+2x)=

-(3x-4)(8x-7)=-(24x²-53x+28)=-24x²+53x-28.

 

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