1. Let's clarify how to identify the answers $a$ and $b$ from the previous worksheet. 2. Typically, $a$ and $b$ represent variables or solutions to equations given in the problems. 3. To confirm $a$ and $b$ as answers, check the problem statements where these variables are defined or solved. 4. Look for equations or expressions where $a$ and $b$ are isolated or calculated. 5. The worksheet should show steps leading to values or expressions for $a$ and $b$. 6. If $a$ and $b$ are roots of an equation, they satisfy the equation when substituted back. 7. Verify by substituting $a$ and $b$ into the original equations to confirm correctness. 8. This process ensures $a$ and $b$ are indeed the answers from the worksheet.