Quadratic Functions Worksheet - Math Iii, Unit 2 Page 5
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1
2
3
4
524.
Find the value of the discriminant for each equation below. Then describe the nature of the
roots. Do not solve these quadratic equations.
2
2
2
i.
x
– 20 x + 100 = 0
ii.
2x
+ 7 = 10x
iii.
x
= 6x -20
25.
Based on the graphs below, describe the value of the discriminant and state if the
discriminant is = 0, < 0, or > 0. Justify your answer.
y
y
a.
b.
c.
y
x
x
x
1
2
27. Change y = 3x
– 30x – 14 to vertex
y
x (
) 9
14
2
26. Change
into standard
3
form by completing the square.
form. Show your work!
Show your work!
Simplify.
28. √-27
29. (2 + 3i) ( 8 – 5i)
30. (5 + i) ²
31.
32.
33.
(2 + 5i) (6 + i)
175
Find the polynomial equation for the zeros.
34. -4 and -4/5
Math III
Unit 2 Test REVIEW - Quadratic Functions
Page 5 of 5
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