Description
1) Simplify the expression.
(3 - i)(2 - 2i)
A) 4 + 4i
B) -6 + 6i
C) -6 + 2i
D) 4 - 8i
2) Simplify the expression.
(1- 4i)(2 + i)
A) 4 - 8i
B) -2 - 7i
C) 2 - 11i
D) 6 - 7i
3) Simplify the expression.
(3 - 4i) - (1 - 4i)
A) 2 - 8i
B) 2
C) 2 + 8i
D) 4
4) Simplify the expression.
(5 - 2i) + (4 + 4i)
A) 11i
B) 9 + 2i
C) 9 + 6i
D) 1 + 2i
5) Simplify the expression.
i^13
A) 1
B) -1
C) i
D) -i
6) Simplify the expression.
A) 8ix^2
B) 8i^2x^2
C) -8x^2
D) -8ix^2
7) Simplify the expression.
A) 9
B) -9
C) 9i
D) -9i
Explanation & Answer
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𝒊𝟐 = 𝒊 ∙ 𝒊 = −𝟏
1. (3 − 𝑖)(2 − 2𝑖) = 6 − 2𝑖 − 6𝑖 + 2𝑖 2 = 4 − 8𝑖, D.
2. (1 − 4𝑖)(2 + 𝑖) = 2 − 8𝑖 + 𝑖 − 4𝑖 2 = 6 − 7𝑖, D.
3. (3 ...
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