分解因式(x-y)²+x(y-x)³+(y-x)&sup4
问题描述:
分解因式(x-y)²+x(y-x)³+(y-x)&sup4
²是平方的意思,以此类推
答
(x-y)²+x(y-x)³+(y-x)^4
=(x-y)^2-x(x-y)^3+(x-y)^4
=(x-y)^2(1-x^2+xy+x^2-2xy+y^2)
=(x-y)^2(y^2-xy+1)