1、北师大版七年级数学下册整式的乘法练习题 184(xy)22(2x3)(2x3)(m2n)1(m2n)1m23x2(x4)(x4)(53t2)(53t2)(4y)2(4y)2(m1)(m1)(x6y)28(xy)22(x2y)(x2y)(m2n)1(m2n)1m23x2(x1)(x1)(x2yz)(x2yz)(2n3m)2(2n3m)2(mn4)(mn4)(x3y)26(xy)24(2a2b)(2a2b)(mn4)(mn4)m25x2(4x)(4x)(2abc)(2abc)(x2y)2(x2y)2(2x3)(2x3)(x4y)22(xy)22(x2y)1(x2y)1(m1)(m1)m25x2(2
2、x3)(2x3)(2n3m4)(2n3m4)(x2y)2(x2y)2(2x3)(2x3)(x3y)26(xy)22(mn4)(mn4)(m2n)1(m2n)1m22x2(x4)(x4)(22ab)(22ab)(2n3m)2(2n3m)2(2x3)(2x3)(x6y)28(xy)23(2n3m)(2n3m)(4m)(4m)m25x2(2y3x)(2y3x)(x2y)1(x2y)1(x2y)12(x2y)12(x2y)(x2y)(x3y)26(xy)23(22a)(22a)(m2n)1(m2n)1m25x2(2y3x)(2y3x)(x2y)1(x2y)1(53t)2(53t)2(2a2b)(2a2
3、b)(x5y)24(xy)22(2x3)(2x3)(mn4)(mn4)m25x2(x1)(x1)(mn4n)(mn4n)(m1)2(m1)2(x2y)(x2y)(x5y)24(xy)22(53t)(53t)(4m)(4m)m22x2(53x)(53x)(m1n)(m1n)(x2y)2(x2y)2(2n3m)(2n3m)(x6y)22(xy)23(mn4)(mn4)(4m)(4m)m24x2(x1)(x1)(2n3m4)(2n3m4)(22a)2(22a)2(2n3m)(2n3m)(x2y)28(xy)23(m1)(m1)(mn4)(mn4)m22x2(x2y)1(x2y)1(53t2)(53t2)(2x3)2(2x3)2(4y)(4y)(x3y)28(xy)23(22a)(22a)(mn4)(mn4)m24x2(4x)(4x)(2abc)(2abc)(x2y)2(x2y)2(2x3)(2x3)(x4y)24(xy)24(53t)(53t)(2m2n)(2m2n)m23x2(53x)(53x)(2x3y)(2x3y)(2n3m)2(2n3m)2(22a)(22a)(x2y)22(xy)2