[우리동네]10x세제곱y-29x제곱y제곱+10xy세제곱/ (x-y)(y-z)-(z-y)(z-x)/ ab+1-a-b/ (a+b)(x제곱-y제곱)-(x-y)(a제곱-b제곱)/2(p-2q)제곱+3(2q-p)/ a제곱b+b제곱c-a제곱c-b세제곱/ x제곱-2mx-n제곱+2mn/ (a제곱+b제곱)제곱-4a제곱b제곱/ x제곱-4y제곱-2x+1/ x세제곱+ax제곱-x-a/ a제곱-b제곱-c제곱+2bc/ (a+2b)제곱+2a+4b+1 답좀알려주세요