SOLUTION: What is the simplest form of the expression 7i( −3i) + 9?
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Question 1171980
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What is the simplest form of the expression 7i( −3i) + 9?
Answer by
ikleyn(52778)
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= 21*i^2 + 9 = -21*(-1) + 9 = 21 + 9 = 30.
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