
Quadratics with Complex Number Answers
Authored by Anthony Clark
Mathematics
11th Grade
CCSS covered

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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Answer explanation
Recall that a complex number is a number in the form a+bi, where "a" is the real part, and "b" is the imaginary part.
The real part is 8.4.
Simplify the radical expression as an imaginary number.
Tags
CCSS.HSN.CN.A.1
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve for x:
x = {-4, -1}
x = {-1, -4}
x = {2+i, 2-i}
x = {-2+i, -2-i}
Tags
CCSS.HSA-REI.B.4B
CCSS.HSN.CN.C.7
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve for x:
x = {-3+2i, -3-2i}
x = {7, 6}
x = 2±i√3
No solution
Tags
CCSS.HSA-REI.B.4B
CCSS.HSN.CN.C.7
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve for x: x2 - 5x + 8 = 0
x = (-5±i√7)/2
x = (5±i√7)/2
x = (8±i√7)/2
x = (5±√57)/2
Tags
CCSS.HSA-REI.B.4B
CCSS.HSN.CN.C.7
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Solve x2 - 5x + 10 = 0
(5 - i√15)/2 , (5 + i√15)/2
(5 - √15)/2 , (5 + √15)/2
(5 - i√65)/2 , (5 + i√65)/2
(5 - √65)/2 , (5 + √65)/2
Tags
CCSS.HSA-REI.B.4B
CCSS.HSN.CN.C.7
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
x2 + 36 = 0
x = ±6
x = 6i
x = -6
x = ±6i
Tags
CCSS.HSA-REI.B.4B
CCSS.HSN.CN.C.7
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve 2x2 – 6x + 5 = 0
x=3/2±i/2
x=3 ± i/2
x=3/2 ± i
x=3±i
Tags
CCSS.HSA-REI.B.4B
CCSS.HSN.CN.C.7
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