Simplify:
(7 + 2i)(9 - 6i)
(7 + 2i)(9 - 6i)
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Complex Numbers for Grade 10B
Quiz
•
Mathematics
•
10th Grade
•
Hard
Solomon Abalaka
Used 4+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
75-24i
63 - 24i - 12i2
51 - 24i
58 + 60i
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does i2 = ?
-1
√-1
1
-√1
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Simplify
√-25
√-25
-5i
5
5i
-5
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Simplify:
√-108
√-108
3i√6
3i√20
6i√3
20i√3
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Simplify
2i - 7i + 10
2i - 7i + 10
-5i+10
5i
9i+10
5i+10
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Simplify
3i - (4 + 7i)
3i - (4 + 7i)
-4 + 10i
21 - 12i
4 - 10i
-4 - 4i
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Find the sum.
(5-2i) + (-7+8i)
(5-2i) + (-7+8i)
-2+6i
12+6i
-35-16i2
-35 -16i
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