18. 8i + 9 - 12 + 61 -7 - 5i91 -10h. -i101 - 9
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Answer:
The correct option is a.
8i + 9 - 12 + 6i - 7 - 5i = 9i - 10
Explanation:
Given the expression:
8i + 9 - 12 + 6i - 7 - 5i
To simplify this, first collect like terms as follows:
8i + 6i - 5i + 9 - 12 - 7
= 9i - 10