2. 外语
  3. (5x3+3x-12)-(2x3-6x+17)=______

(5x3+3x-12)-(2x3-6x+17)=______

admin2011-03-08  19
问题  (5x3+3x-12)-(2x3-6x+17)=______
选项
答案 To add or subtract polynomials, combine like terms (remember to keep track of the negative signs!): (5x3+3x-12)-(2x3-6x+17) (5x3-2x3)+(3x+6x)-(17-12) 3x3+9x-5
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