Tìm Q , biết: x-y/x^3+y^3.Q=x^2-2xy+y^2/x^2-xy+y^2
Giải thích
x−yx3+y3.Q=x2−2xy+y2x2−xy+y2⇒Q=x2−2xy+y2x2−xy+y2:x−yx3+y3=x−y2x2−xy+y2.x+yx2−xy+y2x−y=x−yx+y=x2−y2
x−yx3+y3.Q=x2−2xy+y2x2−xy+y2⇒Q=x2−2xy+y2x2−xy+y2:x−yx3+y3=x−y2x2−xy+y2.x+yx2−xy+y2x−y=x−yx+y=x2−y2