Attempt the question, check the explanation, and continue with similar questions to build confidence before exams.
x²/a² - y²/b² = 1
y²/a² - x²/b² = 1
x²/b² - y²/a² = 1
y²/b² - x²/a² = 1
Continue with nearby questions to strengthen the same chapter concept while you still have the context fresh in mind.