(x²+y²)-x²y²

问题描述:

(x²+y²)-x²y²
3ax²-3ay四次方
p四次方-1

(x²+y²)-x²y²
=(x^2+y^2+xy)(x^2+y^2-xy)
3ax²-3ay^4
=3a(x^2-y^4)
=3a(x+y^2)(x-y^2)
p^4-1
=(p^2+1)(p^2-1)
=(p^2+1)(p+1)(p-1)