Skip to content
free
K
1
2
practice
Home
Math
English
Science
Social Studies
Contact
Language
English
Español
Sign In
/
College Test Prep
/
Praxis Core
/
Solve Quadratic Equations by Factoring
Grade Level
Praxis Core
5165.048 Solve Quadratic Equations by Factoring
0%
Skill Level
🟢 Easy
00:00
Progress to Next Level
25% to Medium
Easy
Medium
Hard
Mastery
100%
For x
2
+ 81 = 0, which choice lists both complex roots?
A
x = 81i or x = -81i
B
x = 9i or x = -9i
C
x = 1 + 9i or x = 1 - 9i
D
x = 9 or x = -9
Submit Answer