(X-Y)(Y-X)²（X-Y）三次方

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(X-Y)(Y-X)²（X-Y）三次方(X-Y)(Y-X)²（X-Y）三次方(X-Y)(Y-X)²（X-Y）三次方(X-Y)(Y-X)²（X-Y）三次方=(X-

(X-Y)(Y-X)²（X-Y）三次方
(X-Y)(Y-X)²（X-Y）三次方

(X-Y)(Y-X)²（X-Y）三次方
(X-Y)(Y-X)²（X-Y）三次方
=(X-Y)(X-Y)²（X-Y）三次方
=(X-Y)的6次方

(X-Y)(Y-X)²(X-Y)³=（X-Y)(X-Y)²(X-Y)²(X-Y)=（X-Y)(X-Y)(X-Y)²(X-Y)²=(X-Y)²(X-Y)²(X-Y)²=(X-Y)六次方