已知,抛物线y=-x²+4x+m的顶点是A,与x轴交于B、C两点（B在C的左侧）（1）若

来源：学生作业帮助网 编辑：作业帮 时间：2024/10/04 22:24:24
xToFWNL6vz>qXR)IGrbd[tZ4 ` Z6MZіIF54)8 g;N‡I|Au=繻.Y[q_yh;ٟ [aN&WGI+W—VZ*U2̗BjYPiTr*_/ml[UMY5T5UW6R:5l]'jNJ56XvʃF4I-q4Op sHq>H չcPx"OmC4PJ8jpLjBKo45bdrK4#eaGEM@$LsPypivĹxF XvX6=bwR{/+`BdiP@JiJ9r3[P m=ZUNyPbV3=ܹv=s7n&9<# St|:+M'ɺpE2PnMdN({p^3AzGItE'UEzgs7XHf@ `@$Q{3G. +>0^eg r1g^1?H2qR PEBo\;?gvA^㩹EPKϋ:N'PpGDn}G1}}yOwᏇ4r`lezw̎'mݓ&b;wnka uk4Ouǭ|g2>'ȕ