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ǰλãҳ > 2019中考数学一轮综合复习同步讲??课实? - 百度文库

2019中考数学一轮综合复习同步讲??课实? - 百度文库

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25.7__________С_________ 26.a2?3a?1?b2?2b?1?0δҵԴa?27.㣺(1)(?1)0?

2????1231222312?????3?2(3)1 (4) ?2?()?2?|()?3?()?3|???|4?9|?|?7|?5??2??3????????????2??4?33?4?????8??21?bδҵԴ= a211tan45??2?1?4 (2)()?2?(3?2)0?2sin30???3

22

28.ȽϴС12332 25?11

2

29.֪xy2x?3y?1?|x?2y?2|?02x?

30.֪M?

31.֪x10֣y10С֣x10-yƽ.

a?b?24yƽ. 5a?8?a?8?ƽN?2a?b?4b?3?b?3?M?Nƽ

32.һ߳Ϊ11cmκһΪ13cmΪ8cmľΣҪһΪͼε֮͵Σʱ߳ӦΪ١

33.a?5,b?3,a?ba+bֵ

34.۲ͼÿСεı߳Ϊ1ͼӰֵǶ٣߳Ƕ٣ ƹƱֵ֮߳䡣 ǰѱ߳ϱʾ

01 ʵ ڣ ֣100 ʱ䣺20 ÷֣ 1.??2ĵǣ A.2 B.1 C.?1 D.-2 222.Aϱʾ+2Aƽ3λBBʾʵǣ A.3 B.-1 C.5 D.-13 3.16ƽǣ A.4 B.2 C.4 D.?2 4.x෴3,y=5x+yֵΪ A.-8 B.2 C.8-2 D.-82 5.?32Ľǣ A.-9 B.9 C.-6 D.6 2 36.(-2)-(-2)Ľǣ A.-4 B.2 C.4 D.12 7.-23-4-56,ȡ,õĻǣ A.10 B.20 C.-30 D.18 8.m?3?(n?2)2?0m?2nֵΪ A.-4 B.-1 C.0 D.4 9.ͼ,ABʾģ A.Ϊ B.Ϊ C.Ϊ D.Ϊ 10.˵ȷǣ 3 A.3910ȷʮλ 5 B.ѧʾ80410ԭ80400 4. C.504302Чֵ5010 D.õĽ81780ȷ0001 11.ȫӻԾΪĴ봨63ֹعԼ423.64ԪÿѧʾԼΪ__________ԪЧ֣ 12.ʵxyx?2?(3?y)2?0,ʽxy?x2ֵΪ__________ 13.20aһôСaֵΪ 14.֪һƽֱ2a-2a-4 15.11__________С_________ 16.ͼ,ӵAAB(1)C(2)DAEFGAB˳ѭ˶,2019________ 17.㣺 (1)172?82 (2)132?122 (3)( (4)9?400?3?1?3(?1)3 (5) 18.֪abΪ෴,cdΪ,mľֵ2, 110.25?0.36)400 233?2?(?2)2?2sin60. |a?b|?4m?3cdֵ 22m?119.֪y?x2?3yƽΪ4xֵ 20.֪xy2x?3y?1?|x?2y?2|?02x? 4yƽ. 5

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25.7__________С_________ 26.a2?3a?1?b2?2b?1?0δҵԴa?27.㣺(1)(?1)0? 2????1231222312?????3?2(3)1 (4) ?2?()?2?|()?3?()?3|???|4?9|?|?7|?5??2??3????????????2??4?33?4?????8??21?bδҵԴ= a211tan45??2?1?4 (2)()?2?(3?2)0?2sin30???3 22 28.ȽϴС12332 25?11 2 29.֪xy2x?3y?1?|x?2y?2|?02x?

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