step plz
Find the optimum values of the following quadratic functions.
1.y=-4x^2+20x+5
2. y=-3x^2-3x-9/4
收錄日期: 2021-04-18 00:12:23
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20150822041738AA6HYts