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2018年河南省中考数学试卷word完美?- 百度文库

Դû ʱ䣺2025/5/28 21:33:51 loading ƪĵֻ
˵ݽԤݿܲȫҪĵҪݣwordʹáword΢ź:xxxxxxxQQxxxxxx ܸṩĵл֧½⡣

2ٽ̩ⷽx+6x5=0x1=1x2=5A10 B50C05 OCBΪֱΣ OBC=OCB=45㣬 AMBC

AMBΪֱΣ AM=

AB=

4=2

2

ԵAMPQΪıƽıΣAMPQ PQ=AM=2

PQBC

PDxύֱBCDͼ1PDQ=45㣬 PD=

PQ=

2

=4

Pmm2+6m5Dmm5 PֱBCϷʱ

PD=m2+6m5m5=m2+5m=4m1=1m2=4 PֱBC·ʱ

PD=m5m2+6m5=m25m=4m1=PĺΪ4

m2=

ANBCNNHxHACĴֱƽ߽BCM1ACEͼ2 M1A=M1C ACM1=CAM1 AM1B=2ACB

ߡANBΪֱΣ AH=BH=NH=2 N32

׵ACĽʽΪy=5x5EΪ ֱEM1ĽʽΪy=x+b Eé

+b=b=

ֱEM1ĽʽΪy=x

M1

ֱBCM1NĶԳƵM2ͼ2AM2C=AM1B=2ACB

M2xx5 3=x=M2

⿼˶κۺ⣺նκͼϵκʡֱǵжʺƽıεʣôϵʽͼʣ÷۵˼ѧ⣮

2018年河南省中考数学试卷word完美?- 百度文库.doc ĵWordĵصԣ㸴ơ༭ղغʹӡ
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