2. 外语
  3. (4x2+2x)(x-6)=______

(4x2+2x)(x-6)=______

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问题  (4x2+2x)(x-6)=______
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答案Use the Distributive Property to multiply each term of one polynomial by each term of the other (remember to use the FOIL method). (4x2+2x)(x-6) First terms: (4x2)(x)=4x3 Outside terms: (4x2)(-6)=-24x2 Inside terms: (2x)(x)=2x2 Last terms: (2x)(-6)=-12x Now place the terms in decreasing order of the exponents: 4x3-22x2-12x
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