1. For each of the following quadratics
1. Find the value of the discriminant.
2. Use the value to determine the nature of the
roots.
3. Use to quadratic formula to find the exact
value for the roots of each quadratic.
4. Draw a very rough sketch of what the quadratic might
look like.
a) x2 ­ x ­12 = 0
b) ­x2 + 2x + 18 = 0
c) x2 ­ x + 2 = 0
d) ­x2 + x ­ 4 = 0
e) x2 ­ 6x + 9 = 0
f) ­x2 + 10x ­25 = 0
1

2. 2

3. 3

4. 4