化简3X^2-[5x-(1/2x-3)+2x^2]
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化简3X^2-[5x-(1/2x-3)+2x^2]化简3X^2-[5x-(1/2x-3)+2x^2]化简3X^2-[5x-(1/2x-3)+2x^2]兄弟,这也要问啊简化后是x^2-15x+2.53X
化简3X^2-[5x-(1/2x-3)+2x^2]
化简3X^2-[5x-(1/2x-3)+2x^2]
化简3X^2-[5x-(1/2x-3)+2x^2]
兄弟,这也要问啊
简化后是x^2-15x+2.5
3X^2-[5x-(1/2x-3)+2x^2]
=3x^2-5x+x/2-3-2x^2
=x^2-9x/2-3
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化简x(x-1)+2x(x+1)-3x(2x-5)到底那个对?
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