Expression 1: 0 equals "y" to the 4th power plus "x" to the 4th power minus StartFraction, 4 minus 2 StartRoot, 2 , EndRoot minus 4 StartRoot, "y" squared , EndRoot minus 8 "x" squared Over 4 , EndFraction "y" squared minus StartFraction, 4 minus 2 StartRoot, 2 , EndRoot minus 4 StartRoot, "y" squared , EndRoot Over 4 , EndFraction "x" squared minus StartFraction, 3 minus 2 StartRoot, 2 , EndRoot Over 4 , EndFraction StartRoot, "y" squared , EndRoot plus StartFraction, 3 minus 2 StartRoot, 2 , EndRoot Over 16 , EndFraction0=y4+x4−4−22−4y2−8x24y2−4−22−4y24x2−3−224y2+3−2216