1、8(xy)22(x2y)1(x2y)1(4m)(4m)m22x2(4x)(4x)(4yx)(4yx)(x2y)2(x2y)2(2x3)(2x3)x6y)24(2x3)(2x3)(2m2n)(2m2n)m22x2(2y3x)(2y3x)(2n3m4)(2n3m4)(22a)2(22a)2(53t)(53t)6(2(2a2b)(2a2b)(2n3m)(2n3m)m24x2(53x)(53x)(2a2b)2(2a2b)22(4(x2y)(x2y)2x2(22x)(22x)(x2yz)(x2yz)x4y)23(22a)(22a)(53n)(53n)m22x2(x2y)1(x2y)1(53t2)(53t
2、2)(2x3)2(2x3)2(2a2b)(2a2b)3(4y)(4y)(mn4)(mn4)m23x2(x2y)(x2y)(2abc)(2abc)(53t)2(53t)22(m1)(m1)(m1)(m1)m23x2(x4)(x4)(mn4n)(mn4n)4(4(m1)(m1)(2m3)(2m3)m25x2(2y3x)(2y3x)(2n3m)2(2n3m)2(4y)(4y)x2y)24(2n3m)(2n3m)3x2(22x)(22x)2(4y)(4y)2x2(x1)(x1)(x2y)1(x2y)1(m2n)(m2n)m22x2(2x3)(2x3)(x2y)(x2y)2(22a)(22a)5x2(x2y)1(x2y)1(mn4)2(mn4)2(2n3m)(2n3m)3x2(53x)(53x)