j)

To solve the equation , you can factor out an : . This gives you two potential solutions: or . Solving for in the second part, you find or . So, your solutions are and .

Now, if you ever stumble upon a quadratic equation, always remember to check whether it can be factored or solved using the quadratic formula. A common mistake is forgetting to set the equation to zero before attempting to solve, which can lead to confusion in finding the roots. So, conduct a double-check on your initial equation framework before diving into solving!