使下列等式成立x²+20x+_____=﹙x+_____﹚²x²-5x+_____=﹙x-____﹚²x²-1/3x+_____=﹙x-______﹚²2x²-7x+_____=2﹙x-____﹚²

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/06 07:54:38

使下列等式成立x²+20x+_____=﹙x+_____﹚²x²-5x+_____=﹙x-____﹚²x²-1/3x+_____=﹙x-______﹚²2x²-7x+_____=2﹙x-____﹚²
使下列等式成立x²+20x+_____=﹙x+_____﹚²
x²-5x+_____=﹙x-____﹚²
x²-1/3x+_____=﹙x-______﹚²
2x²-7x+_____=2﹙x-____﹚²

使下列等式成立x²+20x+_____=﹙x+_____﹚²x²-5x+_____=﹙x-____﹚²x²-1/3x+_____=﹙x-______﹚²2x²-7x+_____=2﹙x-____﹚²
100 10
25/4 5/2
1/36 1/6
49/16 7/4