9x 2 4y 2 4y 12x 5 0 July 8, 2019 16 32 64 128 9x ^ 2 - 12xy + 4y ^ 2 9x ^ 4 - 12x ^ 2 * y + 4y ^ 2 = 4x ^ 4 - 12x ^ 2 * y + 9y ^ 2 =
