已知 x1+x2=-2b/3ax1*x2=c/3a求(x1-x2)的平方?提示:(x1-x2)的平方=(x1+x2)的平方-4x1x2(根据完全平方公式的)最后的答案是要求化到:9/4(b/a+1.5)的平方+1/3具体是怎么化到9/4(b/a+1.5)的平方+1/3a+b+c+0
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/18 13:10:19
![已知 x1+x2=-2b/3ax1*x2=c/3a求(x1-x2)的平方?提示:(x1-x2)的平方=(x1+x2)的平方-4x1x2(根据完全平方公式的)最后的答案是要求化到:9/4(b/a+1.5)的平方+1/3具体是怎么化到9/4(b/a+1.5)的平方+1/3a+b+c+0](/uploads/image/z/4517833-49-3.jpg?t=%E5%B7%B2%E7%9F%A5+x1%2Bx2%3D-2b%2F3ax1%2Ax2%3Dc%2F3a%E6%B1%82%28x1-x2%29%E7%9A%84%E5%B9%B3%E6%96%B9%3F%E6%8F%90%E7%A4%BA%3A%28x1-x2%29%E7%9A%84%E5%B9%B3%E6%96%B9%3D%28x1%2Bx2%29%E7%9A%84%E5%B9%B3%E6%96%B9-4x1x2%28%E6%A0%B9%E6%8D%AE%E5%AE%8C%E5%85%A8%E5%B9%B3%E6%96%B9%E5%85%AC%E5%BC%8F%E7%9A%84%29%E6%9C%80%E5%90%8E%E7%9A%84%E7%AD%94%E6%A1%88%E6%98%AF%E8%A6%81%E6%B1%82%E5%8C%96%E5%88%B0%3A9%2F4%28b%2Fa%2B1.5%29%E7%9A%84%E5%B9%B3%E6%96%B9%2B1%2F3%E5%85%B7%E4%BD%93%E6%98%AF%E6%80%8E%E4%B9%88%E5%8C%96%E5%88%B09%2F4%28b%2Fa%2B1.5%29%E7%9A%84%E5%B9%B3%E6%96%B9%2B1%2F3a%2Bb%2Bc%2B0)
xRN@-:vZe]Ct%b@ƅ#Lg+^
.4\49sgz#ZsUS!6,W Nb*.=J9}M[ EwUHB4s'
4sOG%ɬ"]gYzw|f(%[H]ߜ"k4ǧ ge[lDi9^