Question

[gorosuke]

giai phuong trinh nghiem nguyen:x^4+x^2-y^2-y+20=0

Answer 1

[bestnoobahihi]

bạn chơi roblox à

Answer 2

[Nguyễn Quang Trung]

\(x^4+x^2-y^2-y+20=0\)

<=> x²(x²+1)-y(y+1)=-20