1. Zero A zero in the discriminant means that there is one solution, since it's ... plus/minus zero, which is just ...
2. Negative Negative means no real solutions, as the square root of a negative number is not real.
3. Positive If you have a positive number within the square root, it means that your solutions will be ... plus/minus whatever the square root is. One solution is the plus, and one solution is the minus, hence two solutions.
<span>l ≤ 12 2l + 2w < 30 the second and fourth option are saying she can make the length longer than twelve and the third option forgets to double the length and width so it is accurate. The first option is the right answer.</span>
