SOLUTION: (4+3i)(7-3i)

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Question 974612: (4+3i)(7-3i)
Answer by algebrahouse.com(1659) About Me  (Show Source):
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(4 + 3i)(7 - 3i)
= 4(7) + 4(-3i) + 3i(7) + 3i(-3i) {used foil method}
= 28 - 12i + 21i - 9iČ {multiplied through}
= 28 + 9i - 9(-1) {combined like terms and converted iČ to -1}
= 28 + 9i + 9 {multiplied -9 by -1}
= 37 + 9i {combined like terms}

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