(x-y)(y-x)²×(x-y)³
=(x-y)(x-y)²×(x-y)³
=(x-y)^(1+2+3)
=(x-y)^6
(b-a)(a-b)³×(b-a)³
=(a-b)(a-b)³×(a-b)³
=(a-b)^(1+3+3)
=(a-b)^7謝謝，再問一道：已知a^m=2,a^n=3求下列各式的值：①a^m+a②a^3+n③a^m+n+3答完采納，再次感謝~~~①a^m+n=a^m×a^n=2x3=6②a^3+n=a^3xa^n=3a³③a^m+n+3=a^m+n×a^3=6a³