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OpenStudy (anonymous):
simplify the expression (3+11i)+(10+9i)
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OpenStudy (mathstudent55):
Drop the parentheses and add like terms.
OpenStudy (anonymous):
okay so you get 13 + 20i
OpenStudy (mathstudent55):
Correct.
OpenStudy (anonymous):
thank you again
OpenStudy (mathstudent55):
You're welcome again.
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