https://prepswift.gregmat.com/quizzes/quiz/prepswift-quant-tickbox-quiz-4-algebra-column-1 (Question 7)
Shouldn’t it be 8? 0 wouldn’t satisfy the expression either since anything divided by 0 is undefined
\frac{\text{0 + 7}}{\text{0² - 4}}=\frac{\text{7}}{\text{-4}}