八下因式分解
给出三个多项式：½x²+x-1,½x²+3x+1 ½x²-x 请你选择其中两个进行加法运算,并把结果因式分解.
人气：479 ℃ 时间：2020-10-01 21:46:17
解答
(1/2x2+x-1)+(1/2x2+3x+1)=x2+4x=x(x+4)
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