The exponent trap
One misplaced negative sign, a forgotten reciprocal, or an exponent written as x^2 instead of x²can send you into a five-minute cognitive doom-loop. Under test-room conditions your brain treats the typo as “the problem must be harder than it looks.”
Fix: When algebra stalls for more than 60 seconds, mark the item, move on, and return with fresh eyes. Nine times out of ten the original setup was fine — you were solving a ghost equation.