浙江省2019年中考数学复习第一章数与式第四节因式分解课前诊断测试.doc

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1第四节 因式分解课前诊断测试1下列多项式中,能用公式法进行因式分解的是( )Aa 2b 2 Ba 22abb 2Ca 22ab4 2 Da 2abb 22. (2018安徽中考)下列分解因式正确的是( )Ax 24xx(x4)Bx 2xyxx(xy)Cx(xy)y(yx)(xy) 2Dx 24x4(x2)(x2)3(2018山东济宁中考)多项式 4aa 3分解因式的结果是( )Aa(4a 2) Ba(2a)(2a)Ca(a2)(a2) Da(2a) 24已知多项式 x2bxc 分解因式为(x3)(x1),则 b,c 的值为( )Ab2,c3 Bb4,c3Cb2,c3 Db4,c35(2018浙江衢州中考)分解因式:x 29_6(2018山东潍坊中考)因式分解:(x2)xx2_7. (2018四川德阳中考)分解因式:2xy 24xy2x_.参考答案1A 2.C 3.B 4.C5(x3)(x3) 6.(x2)(x1)72x(y1) 2

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