x六次方-x²y四次方,怎么分解因式,
问题描述：
x六次方-x²y四次方,怎么分解因式,
答
x^6-x²y^4
=x²(x^4-y^4)
=x²(x²+y²)(x²-y²)
=x²(x²+y²)(x+y)(x-y)