1、北师大版七年级数学下册整式的乘法练习题 1173x2(x1)(x1)(4yx)(4yx)(2n3m)2(2n3m)2(22a)(22a)(x3y)26(xy)22(x2y)(x2y)(4m)(4m)m24x2(53x)(53x)(53t2)(53t2)(mn4)2(mn4)2(x2y)(x2y)(x4y)26(xy)24(2a2b)(2a2b)(22n)(22n)m22x2(2x2y)(2x2y)(x2yz)(x2yz)(mn4)2(mn4)2(4y)(4y)(x6y)22(xy)22(4y)(4y)(m2n)1(m2n)1m25x2(x2y)1(x2y)1(2n3m4)(2n3m4)(2n3
2、m)2(2n3m)2(4y)(4y)(x5y)26(xy)24(2x3)(2x3)(mn4)(mn4)m22x2(x2y)(x2y)(2abc)(2abc)(x2y)12(x2y)12(22a)(22a)(x3y)22(xy)23(4y)(4y)(m2n)1(m2n)1m22x2(2x3)(2x3)(x2yz)(x2yz)(2x3)2(2x3)2(x2y)1(x2y)1(x5y)24(xy)23(22a)(22a)(2m3)(2m3)m24x2(4x)(4x)(x2yz)(x2yz)(22a)2(22a)2(22a)(22a)(x4y)24(xy)24(m1)(m1)(2n3m)(2n3m)m
3、24x2(53x)(53x)(m1n)(m1n)(2x3)2(2x3)2(22a)(22a)(x3y)24(xy)24(mn4)(mn4)(22n)(22n)m24x2(53x)(53x)(53t2)(53t2)(m1)2(m1)2(mn4)(mn4)(x4y)28(xy)24(x2y)1(x2y)1(53n)(53n)m23x2(x2y)(x2y)(m1n)(m1n)(mn4)2(mn4)2(x2y)1(x2y)1(x5y)28(xy)23(4y)(4y)(m2n)1(m2n)1m23x2(4x)(4x)(53t2)(53t2)(22a)2(22a)2(4y)(4y)(x3y)26(xy)23(2n3m)(2n3m)(m1)(m1)m24x2(x4)(x4)(x2y)1(x2y)1(x2y)12(x2y)12(53t)(53t)(x6y)22(xy)24(x2y)1(x2y)1(53n)(53n)m22x2(22x)(22x)(x2yz)(x2yz)(mn4)2(mn4)2(mn4)(mn4)(x4y)26(xy)22(m1)(m1)(mn4)(mn4)m22x2(x2y)1(x2y)1