Student error Memes

Every math student's forbidden desire revealed! The Mirror of Erised shows the incorrect formula $(a+b)^2 = a^2 + b^2$ instead of the correct $(a+b)^2 = a^2 + 2ab + b^2$. That sneaky binomial expansion term $2ab$ keeps disappearing in students' work, causing mathematical chaos across dimensions. The number of points lost to this algebraic hallucination could fill several scrolls of parchment. Next thing you know, they'll be claiming dividing by zero summons the dark lord of mathematics!