#### Answer

$146$

#### Work Step by Step

$\left( 5-11i\right) \left( 5+11i\right) =5^{2}-\left( 11i\right) ^{2}=25-121i^{2}=25-121\times \left( -1\right) =25+121=146$

Published by
Pearson

ISBN 10:
013421742X

ISBN 13:
978-0-13421-742-0

$146$

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