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x(a-x)(a-y)-y(x-a)(y-a),因式分解,

2020-01-30

x(a-x)(a-y)-y(x-a)(y-a),因式分解,

优质解答

x(a-x)(a-y)-y(x-a)(y-a)为原式
原式=x(a-x)(a-y)-y[-1(a-x)][-1(a-y)] (两个-1相乘得正数)
得到:x(a-x)(a-y)-y(a-x)(a-y)
提取同项式得到答案:(a-x)(a-y)(x-y)