来自丁利晶的问题
二次函数y=ax2+bx+c的图象如图所示,则化简二次根式(a+c)2−−−−−−−√+(b−c)2−−−−−−−√的结果是()。A.a−b+2cB.−a−bC.a+bD.−a+b−2c
二次函数y=ax2+bx+c的图象如图所示,则化简二次根式(a+c)2−−−−−−−√+(b−c)2−−−−−−−√的结果是( )。A.a−b+2cB.−a−bC.a+bD.−a+b−2c
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2019-06-21 23:50