已知：﹙-4x＋3y﹚﹙-3y－4x﹚与多项式M的差是16x＋27y－5xy,求M
已知：﹙-4x＋3y﹚﹙-3y－4x﹚与多项式M的差是16x＋27y－5xy,求M
数学人气：510 ℃时间：2019-09-22 07:14:21
优质解答
﹙-4x＋3y﹚﹙-3y－4x﹚=(4x+3y)*(4x-3y)=16x-9y ﹙-4x＋3y﹚﹙-3y－4x﹚-M=16x＋27y－5xy M=-36y+5xy
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