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Simplify the expressions involving complex numbers.

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Express each number in terms of i and simplify.
p + sqrt(-81)

Add --
(2 + 6i) + (7 - 4i)

Subtract as indicated --
(4 + 3i) - (10 - 4i)

Find the product --
8i (3i - 2)

Find the product --
(7 - 6i)(8 - 3i)

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Kavita Narang

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