抛物线y=x²-1999x+2000与X 轴两个交点的坐标为(a,0) (b,0)则(a²-1999a+2000)(b²-1999b+2000)的值是A -1999 B.-2000 C.1999 D 2000求(a²-2000a+2000)(b²-2000b+2000)的值
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抛物线y=x²-1999x+2000与X 轴两个交点的坐标为(a,0) (b,0)则(a²-1999a+2000)(b²-1999b+2000)的值是A -1999 B.-2000 C.1999 D 2000求(a²-2000a+2000)(b²-2000b+2000)的值
抛物线y=x²-1999x+2000与X 轴两个交点的坐标为(a,0) (b,0)
则(a²-1999a+2000)(b²-1999b+2000)的值是
A -1999 B.-2000 C.1999 D 2000
求(a²-2000a+2000)(b²-2000b+2000)的值
抛物线y=x²-1999x+2000与X 轴两个交点的坐标为(a,0) (b,0)则(a²-1999a+2000)(b²-1999b+2000)的值是A -1999 B.-2000 C.1999 D 2000求(a²-2000a+2000)(b²-2000b+2000)的值
a,b均是方程x²-1999x+2000=0的根.
a²-1999a+2000=0
b²-1999b+2000=0
(a²-1999a+2000)(b²-1999b+2000)=0
备选答案没有一个是对的,这个题有问题.
题出错了吧
Nike W&K advertising agency company
director Chris Riley contrast from the plan, Nike and reebok company's
advertisement after comments: "you put the Nike and reebok advertising to 14
-1...
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Nike W&K advertising agency company
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