陕西省榆林市2021-2022学年中考数学适应性模拟试题含解析2及点睛

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௃FZ(Dᵫ⚪íªḄ+ñডZ6x10+4=82,ᦑᫀ·6x10+4=82(2)ᵫ⚪+48x52+4=502,ᦑᫀ·48x52+4(3)ñnAZnx(n+4)+4=(n+2)2,óôZVnx(n+4)+4=n2+4n+4=(n+2)2,nx(n+4)+4=(n+2)2ᡂ÷.ூ23௃D⚪ὃ7ᨵᳮᦪḄøᔠn)ஹᦪùḄ"ᓄjFD⚪ḄᐵbAôᨵᳮᦪḄøᔠn)Ḅ()fk.323ஹy=2x2+x-3,C2ᙶ᪗·(-ú0)ᡈ(2,7)ூ
᪆௃µᱥ`ḄF᪆·y=ax2+bx+c,%A(0,-3),B(1,0),D(-1,-2)&ᐭ+F᪆2CḄᙶ᪗ᓽ+.ூ
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