If you can't remember a specific formula for a word problem, try to break down the problem into smaller parts and see if you can apply any general formulas or principles. You can also try searching online or consulting a textbook for the formula.
In most cases, it is best to use the formula provided in the word problem as it is specifically tailored to the problem. However, if you can find a different formula that can also solve the problem accurately, you can use it.
One way to remember formulas more easily is to practice using them frequently. You can also create flashcards or mnemonic devices to help you remember the formulas. Additionally, understanding the logic and concepts behind the formula can also make it easier to remember.
If you are still struggling to remember a formula, you can try seeking help from a teacher, tutor, or classmates. They may be able to provide additional tips or explanations that can help you remember the formula.
While it is helpful to have a general understanding of formulas, it is not necessary to memorize every single formula for word problems. As long as you understand the concepts and principles behind the formulas, you can apply them to solve problems effectively.