因式分解:(1)-x^2/4-y^2+xy (2)(x-y)^3+4y^2y-4xy^2

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/02 07:43:11
因式分解:(1)-x^2/4-y^2+xy (2)(x-y)^3+4y^2y-4xy^2

因式分解:(1)-x^2/4-y^2+xy (2)(x-y)^3+4y^2y-4xy^2
因式分解:(1)-x^2/4-y^2+xy (2)(x-y)^3+4y^2y-4xy^2

因式分解:(1)-x^2/4-y^2+xy (2)(x-y)^3+4y^2y-4xy^2
(1)-x^2/4-y^2+xy
=﹣1/4(x²-4xy+4y²)
=﹣1/4(x-2y)²
(2)(x-y)^3+4x^2y-4xy^2
=(x-y)^3+4xy(x-y)
=(x-y)[(x-y)²+4xy](中括号内的展开)
=(x-y)(x+y)²
不懂的还可以追问!满意请及时采纳! O(∩_∩)O