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首页> （苏科版）数学九上：第一章一元二次方程第10讲一元二次方程根与系数关系课后练习41（含答案）
（苏科版）数学九上：第一章一元二次方程第10讲一元二次方程根与系数关系课后练习41（含答案）
时间：2019-07-21 12:28:23 下载该word文档
![](https://wkrtcs.bdimg.com/rtcs/image?w=42.666666666667&md5sum=ec473d4d9203409f463b9f6a8a386027&sign=f7ea417870&rtcs_flag=1&rtcs_ver=3&l=webapp&bucketNum=282&ipr={"t":"img","w":"42.666666666667","h":"34.666666666667","dataType":"png","c":"word/media/image1.png","imgOriW":32,"imgOriH":26})
第10讲 一元二次方程根与系数关系
题一：![](https://wkrtcs.bdimg.com/rtcs/image?w=3&md5sum=ec473d4d9203409f463b9f6a8a386027&sign=f7ea417870&rtcs_flag=1&rtcs_ver=3&l=webapp&bucketNum=282&ipr={"t":"img","w":"3","h":"2","dataType":"png","c":"word/media/image2.png","imgOriW":324,"imgOriH":36})
求方程的两根的和与两根的积．
题二： 求方程![](https://wkrtcs.bdimg.com/rtcs/image?w=87&md5sum=ec473d4d9203409f463b9f6a8a386027&sign=f7ea417870&rtcs_flag=1&rtcs_ver=3&l=webapp&bucketNum=282&ipr={"t":"img","w":"87","h":"23","dataType":"png","c":"word/media/image4_1.png","imgOriW":2080,"imgOriH":544})
的两根的和与两根的积．
题三： 已知方程![](https://wkrtcs.bdimg.com/rtcs/image?w=93&md5sum=ec473d4d9203409f463b9f6a8a386027&sign=f7ea417870&rtcs_flag=1&rtcs_ver=3&l=webapp&bucketNum=282&ipr={"t":"img","w":"93","h":"23","dataType":"png","c":"word/media/image5_1.png","imgOriW":2240,"imgOriH":544})
的一个根是2，不解方程求这个方程的另一个根．
![](https://wkrtcs.bdimg.com/rtcs/image?w=3&md5sum=ec473d4d9203409f463b9f6a8a386027&sign=f7ea417870&rtcs_flag=1&rtcs_ver=3&l=webapp&bucketNum=282&ipr={"t":"img","w":"3","h":"1","dataType":"png","c":"word/media/image2.png","imgOriW":324,"imgOriH":36})
题四： 已知一元二次方程![](https://wkrtcs.bdimg.com/rtcs/image?w=91&md5sum=ec473d4d9203409f463b9f6a8a386027&sign=f7ea417870&rtcs_flag=1&rtcs_ver=3&l=webapp&bucketNum=282&ipr={"t":"img","w":"91","h":"23","dataType":"png","c":"word/media/image6_1.png","imgOriW":2176,"imgOriH":544})
有一根为7，求这个方程的另一个根和m的值．
题五： 已知x1、x2是方程![](https://wkrtcs.bdimg.com/rtcs/image?w=94&md5sum=ec473d4d9203409f463b9f6a8a386027&sign=f7ea417870&rtcs_flag=1&rtcs_ver=3&l=webapp&bucketNum=282&ipr={"t":"img","w":"94","h":"23","dataType":"png","c":"word/media/image7_1.png","imgOriW":2272,"imgOriH":544})
的两个根，利用根与系数的关系求值：
(1)x1+x2；(2)x1x2；(3)；(4)x12+x22．
题六： 设x1，x2是方程![](https://wkrtcs.bdimg.com/rtcs/image?w=94&md5sum=ec473d4d9203409f463b9f6a8a386027&sign=f7ea417870&rtcs_flag=1&rtcs_ver=3&l=webapp&bucketNum=282&ipr={"t":"img","w":"94","h":"23","dataType":"png","c":"word/media/image9_1.png","imgOriW":2272,"imgOriH":544})
的两个根，利用根与系数的关系求值：
(1)(x1+1)(x2+1)；(2)x12x2+x1x22；(3)；(4)(x1 x2)2．
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（苏科版）数学九上：第一章一元二次方程第10讲一元二次方程根与系数关系课后练习41（含答案）
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