(x+3y)/﹙x²-y²﹚-(x+2y)/(x²-y²)+﹙2x-3y﹚/﹙x²-Y²﹚

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/30 11:37:07
(x+3y)/﹙x²-y²﹚-(x+2y)/(x²-y²)+﹙2x-3y﹚/﹙x²-Y²﹚

(x+3y)/﹙x²-y²﹚-(x+2y)/(x²-y²)+﹙2x-3y﹚/﹙x²-Y²﹚
(x+3y)/﹙x²-y²﹚-(x+2y)/(x²-y²)+﹙2x-3y﹚/﹙x²-Y²﹚

(x+3y)/﹙x²-y²﹚-(x+2y)/(x²-y²)+﹙2x-3y﹚/﹙x²-Y²﹚
原式=y/﹙x²-y²﹚+﹙2x-3y﹚/﹙x²-Y²﹚=2﹙x-y﹚/﹙x²-Y²﹚=2/(x+y)