将二次函数y等于x平方加6x加5配方为y等于(x-h)2加k形式,则h等于 k等于
人气：447 ℃ 时间：2020-06-13 17:03:23
解答
y＝x²＋6x＋5
＝x²＋6x＋3²－3²＋5
＝﹙x＋3﹚²－4
则有：h＝﹣3,k＝﹣4.
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