Pre Assessment Quadratic Unit Worksheet Page 6
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13Solve the following equations using square roots.
2
9 x
– 15 = 34
____
A ±7
C no real number solutions
B 7
D ±49
2
10 x
+ 20 = 4
____
24
C ±
24
A
B –4
D no real number solutions
11 Solve (x − 8)(4x + 2) = 0 using the Zero Product Property.
____
1
1
A x = –8 or x = −
C x = –8 or x =
2
2
1
1
B x = 8 or x = −
D x = 8 or x =
2
2
Solve the following equations by factoring.
2
12 z
− 4z − 12 = 0
____
A z = –6 or z = 2
C z = 6 or z = –2
B z = –6 or z = –2
D z = 6 or z = 2
2
13 3z
+ 17z + 20 = 0
____
A z = –5 or z = 4
C z = –5 or z = –4
2
2
B z = −1
or z = –4
D z = −1
or z = 4
3
3
Page 6
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