Practice problem
Which of the following is equal to
x2+y2+z2x^2+y^2+z^2x2+y2+z2
yz+zx+xyyz+zx+xyyz+zx+xy
x2+y2+z2+3xyx^2+y^2+z^2+3xyx2+y2+z2+3xy
x2+y2+z2−3yzx^2+y^2+z^2 - 3yzx2+y2+z2−3yz
x2+y2+z2−xy−yz−zxx^2+y^2+z^2-xy-yz-zxx2+y2+z2−xy−yz−zx
x3−x2+y3−y2+z3−z2x^3-x^2+y^3-y^2+z^3-z^2x3−x2+y3−y2+z3−z2
x2−x+y2−y+z2−zx^2-x+y^2-y+z^2-zx2−x+y2−y+z2−z
(x2−xy+y2)+(y2−yz+z2)+(z2−zx+x2)(x^2-xy+y^2) + (y^2-yz+z^2) + (z^2-zx+x^2)(x2−xy+y2)+(y2−yz+z2)+(z2−zx+x2)
Type a concept, like “slope” or “photosynthesis”.
