1、北师大版七年级数学下册整式的乘法练习题 33(x2y)22(xy)24(x2y)(x2y)(2m2n)(2m2n)m22x2(2x2y)(2x2y)(22ab)(22ab)(x2y)12(x2y)12(2a2b)(2a2b)(x6y)22(xy)23(4y)(4y)(2m3)(2m3)m22x2(x2y)1(x2y)1(2n3m4)(2n3m4)(22a)2(22a)2(x2y)1(x2y)1(x2y)26(xy)23(2a2b)(2a2b)(mn4)(mn4)m24x2(2x2y)(2x2y)(22ab)(22ab)(53t)2(53t)2(53t)(53t)(x6y)28(xy)23(4y
2、)(4y)(m2n)(m2n)m24x2(x1)(x1)(x2y)1(x2y)1(2x3)2(2x3)2(2n3m)(2n3m)(x4y)22(xy)22(mn4)(mn4)(m1)(m1)m22x2(x2y)1(x2y)1(53t2)(53t2)(mn4)2(mn4)2(4y)(4y)(x2y)22(xy)24(x2y)1(x2y)1(m1)(m1)m24x2(2y3x)(2y3x)(2n3m4)(2n3m4)(2n3m)2(2n3m)2(mn4)(mn4)(x5y)24(xy)22(2n3m)(2n3m)(m2n)1(m2n)1m22x2(x1)(x1)(m1n)(m1n)(mn4)2(m
3、n4)2(m1)(m1)(x2y)22(xy)22(x2y)(x2y)(2m3)(2m3)m25x2(x4)(x4)(x2y)1(x2y)1(m1)2(m1)2(2a2b)(2a2b)(x3y)28(xy)23(m1)(m1)(mn4)(mn4)m24x2(4x)(4x)(22ab)(22ab)(53t)2(53t)2(4y)(4y)(x2y)22(xy)24(53t)(53t)(m2n)(m2n)m25x2(4x)(4x)(4yx)(4yx)(22a)2(22a)2(4y)(4y)(x3y)22(xy)23(22a)(22a)(m2n)(m2n)m25x2(4x)(4x)(x2y)1(x2y)1(53t)2(53t)2(2n3m)(2n3m)(x2y)22(xy)22(53t)(53t)(mn4)(mn4)m24x2(x1)(x1)(m1n)(m1n)(x2y)12(x2y)12(x2y)1(x2y)1(x3y)24(xy)22(mn4)(mn4)(m2n)1(m2n)1m25x2(2y3x)(2y3x)(m1n)(m1n)(mn4)2(mn4)2(x2y)(x2y)(x5y)2