2021-2022学年江苏省连云港市灌南县八年级（上）第二次调研数学试卷（附答案详解）

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2021-2022
ḕᓭ᪥
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8ÞᓟᑖÄ]Ḅᦪà5¦±"áâᐭᓽ.⚪ὃãäᦪ[ᨵᦔᦪàãäᦪæcᦪḄ|ãÜUᵨæcÜ⊤è.)éᨵæcᑮê)Äëᶇí#ᨵᦔᦪàk`a.14.ூᫀ௃±3ூ᪆௃ூᑖ᪆௃¨⚪ὃxyzj᪷[zj᪷ḄẠ⚪ᐵ!.ᐜxxyzj᪷S᪷Hzj᪷ḄᓽQᫀ.ூ௃'ï=9ðe(±3)2=9,ᡠU9Ḅzj᪷e±3.ᦑᫀe'±3.15.ூᫀ௃4ூ᪆௃'•••4(a,1)B(-5,b)ᐵñ^Ô,•••a=5,b=ò1>ᑣa+bḄe'—1=4.ᦑᫀe'4.{|ᑭᵨᐵñ^ÔḄឋMQa,bḄ¦§Qᫀ.¨⚪⌕ὃᐵñ^ÔḄឋMbcÏᙶ᪗Ḅᐵô⚪ᐵ!.16.ூᫀ௃4X10ூ᪆௃'43.85kg«4x10ᓟø.ᦑᫀe4x10.ᐜᑭᵨùúᦪa⊤èᯠüÞ#Ä]Ḅᦪà3¦±"áâᐭᓽ.⚪ὃãäᦪ'“æcᑮ(Ä”[''ᨵᨵᦔᦪ”ḄᵨḄ⊤▭᪵Ḅὅ!"#$%&'()*ᦪḄᜧ,-.ὅ//!"0123ᦪ456*78.

917.ூ>ᫀ௃4ூB᪆௃BD•.•.<ᙊᓽ5cK<6MḄ᦮ᦪOᑖQ5,ᓽm=5,U•••n=9,Vmn+19=V45+19-V64=4,ᦑ>ᫀQD4.^_`ᳮᦪbḄᜧ,cmḄ(d᪷f_ghi᪷Ḅc!j%nḄ(kᐭm_ᓽ!.n⚪ὃq^_`ᳮᦪḄᜧ,rs_ghi᪷ḄctB>ḄucmஹnḄ(tm_Ḅᐵx..18.ூ>ᫀ௃-7ூB᪆௃BD᪷f⚪4Ḅzc{D|z=-3~=(-2)0(-3)x(-3)-(-4)0(-3)=9-16=-7,ᦑ>ᫀQD-7ᑭᵨ⚪4Ḅzcm_ᓽ!j%(.⚪ὃqᦪḄ_rs_ᑣBn⚪Ḅᐵx.19.ூ>ᫀ௃BD(l)(x+1/=81.x+1=±9,ᑣX1=8,x=-102(2)|(2x-3)3+32=0,1(2x-3)3=-32,(2x—3)3=—64,2.x-3=-4»

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