新北师大版八年级数学上册期中考试题

2019-2020.3301.367103113.1415512.010101110A.1B.2C.3D.42.34()A12B77C1277D3.A.(2)yaxbB.y=-2x+1C.y=x2D.y=2x2+14.2m-43m-1mA-3B1C-31D-15.Ax3y6AAA.(-3,6)B.-6,3C.(3,-6)D.6,-36.5233327312323535352222A4B3C2D17ABCAB15AC13AD12A42B32C4232D37338.ABCDAD=4cmAB=10cmBDEFDE()A4.8B5C5.8D69.()A93B0.40.2Ca2D2210()A1285B304050C91315D161811011.()02.A.B.C.D.12.24cm15cm8cmhcmhAh17BhC15h16D7h1613ABCA45B12C42ABC5AA1A05B15C95D1014.1800cm2A.80cmB.30cmC.90cmD.120cm.(3,24)1.Pa+2a3xP2.aa2)2(2a3.0442yyyxxy4.12381165.356.82)3(mxmym7.PQPQyP(2,3)Q8.3352aabab9.0)1(1kkK10.ABCABC_________.11..12.),(baA,ab_________.13.10aba________b_______.14.P31yQa+b1bab__________yxCAOB661.520216242162466215421533222360225554223321232.1ABCB(1,0)1ABCxA1B1C12ABC42A2B2C232AA103.1550cm,5,,?84.9232.33xy1x28xyx27.25.ABCBC=20cmDABCD=16cmBD=12cm1ABCBC2ABC.86.baaAababB41b+1A+B703)12(2bba43c333cba852xy343xyxyDBCA9abmn5721amnbn2a+b53*10=3013x2+7=0ax2+bx+c=0x-2x+5=x2-13x2-5x=0A1B2C3D424n52n.A4B6C8D103.xkx2-6x+9=0kAkBkCkkDkk4.ABCD.5.ABCDAB=10AD=6ADABAEAEDDEAEBCFCEFA4B6C8D106.ABCCDEADBEFAFBA.50B.60C.45D.BCD7x(m2-1)x2+mx-1=0mAm0Bm1Cm-1Dm18.x2-4x+2=0,A.(x-2)2=2B(x+2)2=2C.(x-2)2=-2D(x-2)2=69.20112820139.5x.A2(1+x)2=9.5B.2(1+x)+2(1+x)2=9.5C.2+2(1+x)+2(1+x)2=9.5D.8+8(1+x)+8(1+x)2=9.53*6=1811.40cm,16cm_________cm212___________________13.20602.________14x(x+3)(x-1)=0________.154________________.16.x3x2+mx+m-6=00m________.5217.(4161x2+8x-20=0(2)x2-2x-3=0(3)(x-1)(x+2)=4(4)3x2-6x=1(18.512________19.8123431232219ABCDEFBCCDAE=AF1BE=DF2ACEFOOCMOM=OAEMFMAEMF2292045142100