1:抛物线y=3x²-4x+5与x轴的交点坐标为_________,与y轴交点坐标为__________.2:抛物线y=ax²-2x+3与x轴有两个交点,则a的取值范围为________3:已知抛物线y=ax²+bx+c过点(-2,0)(5,0)(1)求次抛
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![1:抛物线y=3x²-4x+5与x轴的交点坐标为_________,与y轴交点坐标为__________.2:抛物线y=ax²-2x+3与x轴有两个交点,则a的取值范围为________3:已知抛物线y=ax²+bx+c过点(-2,0)(5,0)(1)求次抛](/uploads/image/z/3261667-67-7.jpg?t=1%EF%BC%9A%E6%8A%9B%E7%89%A9%E7%BA%BFy%3D3x%26%23178%3B-4x%2B5%E4%B8%8Ex%E8%BD%B4%E7%9A%84%E4%BA%A4%E7%82%B9%E5%9D%90%E6%A0%87%E4%B8%BA_________%2C%E4%B8%8Ey%E8%BD%B4%E4%BA%A4%E7%82%B9%E5%9D%90%E6%A0%87%E4%B8%BA__________.2%EF%BC%9A%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dax%26%23178%3B-2x%2B3%E4%B8%8Ex%E8%BD%B4%E6%9C%89%E4%B8%A4%E4%B8%AA%E4%BA%A4%E7%82%B9%2C%E5%88%99a%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E4%B8%BA________3%EF%BC%9A%E5%B7%B2%E7%9F%A5%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dax%26%23178%3B%2Bbx%2Bc%E8%BF%87%E7%82%B9%EF%BC%88-2%2C0%EF%BC%89%EF%BC%885%2C0%EF%BC%89%281%29%E6%B1%82%E6%AC%A1%E6%8A%9B)
1:抛物线y=3x²-4x+5与x轴的交点坐标为_________,与y轴交点坐标为__________.2:抛物线y=ax²-2x+3与x轴有两个交点,则a的取值范围为________3:已知抛物线y=ax²+bx+c过点(-2,0)(5,0)(1)求次抛
1:抛物线y=3x²-4x+5与x轴的交点坐标为_________,与y轴交点坐标为__________.
2:抛物线y=ax²-2x+3与x轴有两个交点,则a的取值范围为________
3:已知抛物线y=ax²+bx+c过点(-2,0)(5,0)
(1)求次抛物线解析式
(2)抛物线的对称轴是直线________,方程ax²+bx+c=0的解为_______
题目有不懂的可以追问我!别说这道题应该很简单.我也知道但我就是做不起TAT
1:抛物线y=3x²-4x+5与x轴的交点坐标为_________,与y轴交点坐标为__________.2:抛物线y=ax²-2x+3与x轴有两个交点,则a的取值范围为________3:已知抛物线y=ax²+bx+c过点(-2,0)(5,0)(1)求次抛
与X轴无交点,(0,5)
a<1/3
y=a(x+2)(x-5) 得到 y=a(x^2-3x-10) 条件不够,只能得到这个
x=3/2 x1=-2,x2=5