Rút gọn biểu thức sau: (x^2-y^20^3 (y^2-z^2)^3 (z^2-x^2)^3.
Giải thích
x2+y23+z2−x23−y2+z23=−3x4y2−x4z2−x2y2z2+x2z4−x2y4+x2y2z2+y4z2−y2z4=−3x2x2y2−x2z2−y2z2+z4−y2x2y2−x2z2−y2z2+z4=−3x2−y2x2y2−x2z2−y2z2+z4=−3x2−y2x2y2−z2−z2y2−z2=−3x−yx+yx−zx+zy+zy−z
x2+y23+z2−x23−y2+z23=−3x4y2−x4z2−x2y2z2+x2z4−x2y4+x2y2z2+y4z2−y2z4=−3x2x2y2−x2z2−y2z2+z4−y2x2y2−x2z2−y2z2+z4=−3x2−y2x2y2−x2z2−y2z2+z4=−3x2−y2x2y2−z2−z2y2−z2=−3x−yx+yx−zx+zy+zy−z