1、北师大版七年级数学下册整式的乘法练习题 44(m2n)1(m2n)1m25x2(2x2y)(2x2y)(x2y)1(x2y)1(53t)2(53t)2(2n3m)(2n3m)(x6y)26(xy)22(x2y)(x2y)(22n)(22n)m25x2(x4)(x4)(53t2)(53t2)(2n3m)2(2n3m)2(x2y)1(x2y)1(x2y)24(xy)24(x2y)(x2y)(4m)(4m)m24x2(x2y)1(x2y)1(x2y)1(x2y)1(4y)2(4y)2(mn4)(mn4)(x4y)24(xy)23(x2y)(x2y)(m2n)(m2n)m22x2(53x)(53x)(
2、4yx)(4yx)(m1)2(m1)2(22a)(22a)(x2y)28(xy)24(x2y)(x2y)(2m2n)(2m2n)m24x2(x2y)1(x2y)1(x2yz)(x2yz)(22a)2(22a)2(4y)(4y)(x3y)26(xy)22(mn4)(mn4)(m1)(m1)m23x2(x2y)(x2y)(2n3m4)(2n3m4)(x2y)12(x2y)12(mn4)(mn4)(x3y)24(xy)22(x2y)(x2y)(m1)(m1)m22x2(2y3x)(2y3x)(53t2)(53t2)(x2y)12(x2y)12(2x3)(2x3)(x5y)26(xy)24(2x3)(
3、2x3)(mn4)(mn4)m23x2(2x2y)(2x2y)(4yx)(4yx)(x2y)12(x2y)12(4y)(4y)(x2y)22(xy)22(m1)(m1)(mn4)(mn4)m22x2(4x)(4x)(x2yz)(x2yz)(mn4)2(mn4)2(m1)(m1)(x3y)28(xy)24(2x3)(2x3)(2m3)(2m3)m25x2(2x3)(2x3)(mn4n)(mn4n)(4y)2(4y)2(m1)(m1)(x6y)22(xy)23(2x3)(2x3)(2n3m)(2n3m)m24x2(53x)(53x)(m1n)(m1n)(m1)2(m1)2(2n3m)(2n3m)(x4y)24(xy)24(2x3)(2x3)(22n)(22n)m25x2(4x)(4x)(2x3y)(2x3y)(mn4)2(mn4)2(mn4)(mn4)(x5y)26(xy)23(4y)(4y)(m1)(m1)m22x2(x1)(x1)(53t2)(53t2)(2a2b)2(2a2b)2(4y)(4y)(x5y)22(xy)23(4y)(4y)(2m2n)(2m2n)m2