化简:{[-b+根号(b²-4ac)]/2a}*{[-b-根号(b²-4ac)]/2a }(b
来源:学生作业帮 编辑:搜狗做题网作业帮 分类:数学作业 时间:2024/07/31 11:02:32
化简:{[-b+根号(b²-4ac)]/2a}*{[-b-根号(b²-4ac)]/2a }(b²≥4ac)
![化简:{[-b+根号(b²-4ac)]/2a}*{[-b-根号(b²-4ac)]/2a }(b](/uploads/image/z/8876191-31-1.jpg?t=%E5%8C%96%E7%AE%80%3A%7B%5B-b%2B%E6%A0%B9%E5%8F%B7%28b%26%23178%3B-4ac%29%5D%2F2a%7D%2A%7B%5B-b-%E6%A0%B9%E5%8F%B7%28b%26%23178%3B-4ac%29%5D%2F2a+%7D%28b%26%231)
:{[-b+根号(b²-4ac)]/2a}*{[-b-根号(b²-4ac)]/2a }
=1/(4a)×[b²-(b²-4ac)]
=1/(4a)×4ac
=c/a
再问: 你能再写的具体点吗
再答: :{[-b+根号(b²-4ac)]/2a}*{[-b-根号(b²-4ac)]/2a } =1/(4a)×﹛(-b)²-[根号(b²-4ac)]²﹜ =1/(4a)×[b²-(b²-4ac)] =1/(4a)×4ac =c/a
=1/(4a)×[b²-(b²-4ac)]
=1/(4a)×4ac
=c/a
再问: 你能再写的具体点吗
再答: :{[-b+根号(b²-4ac)]/2a}*{[-b-根号(b²-4ac)]/2a } =1/(4a)×﹛(-b)²-[根号(b²-4ac)]²﹜ =1/(4a)×[b²-(b²-4ac)] =1/(4a)×4ac =c/a
化简:{[-b+根号(b²-4ac)]/2a}*{[-b-根号(b²-4ac)]/2a }(b
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