Răspuns:
Explicaţie:
grafic {(1 / 12x ^ 4.2x ^ 2 + 15-y) ((x + 2) ^ 2 + (y-23/3) ^ 2-.1) ((x-2) ^ 2 + (y -23/3) ^ 2-.1) = 0x ^ 2 -40, 40, -20, 20}
grafic {(1 / 12x ^ 4.2x ^ 2 + 15-y) ((x + 2) ^ 2 + (y-23/3) ^ 2-.1) ((x-2) ^ 2 + (y -23/3) ^ 2-.1) = 0x ^ 2 -40, 40, -20, 20}