1、(4yx)(4yx)(22a)2(22a)2(mn4)(mn4)(x5y)22(xy)22(53t)(53t)(4m)(4m)m22x2(x2y)1(x2y)1(22ab)(22ab)(x2y)2(x2y)2(2a2b)(2a2b)(x3y)28(xy)24(4y)(4y)(m2n)(m2n)m23x2(2y3x)(2y3x)(53t2)(53t2)(2a2b)2(2a2b)2(22a)(22a)4(xy)22(x2y)1(x2y)1(2m3)(2m3)m24x2(53x)(53x)(x2y)1(x2y)1(2n3m)2(2n3m)23(22a)(22a)(2m2n)(2m2n)m25x2(x
2、1)(x1)2(2n3m)(2n3m)(m2n)1(m2n)1m2(mn4n)(mn4n)(x4y)22x2(2y3x)(2y3x)(m1n)(m1n)(x2y)12(x2y)12(m1)(m1)(x6y)2(2n3m)(2n3m)m2(2abc)(2abc)(2n3m)(2n3m)4x2(x1)(x1)(x2y)(x2y)(m1)(m1)m22x2(2x2y)(2x2y)(4y)(4y)3(x2y)1(x2y)1(m1)2(m1)24x2(x2y)1(x2y)1(x2yz)(x2yz)(4y)2(4y)2(x2y)23(2x3)(2x3)2x2(x4)(x4)(mn4)2(mn4)2(53t)(53t)