.
=
= =
= =
= =
= = .
The modulus of this complex number is
= = = .
Answer. |(1+2i)/(2+3i)| = .
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On complex numbers see the lessons in this site
- Complex numbers and arithmetical operations on them
- Complex plane
- Addition and subtraction of complex numbers in complex plane
- Multiplication and division of complex numbers in complex plane
- Raising a complex number to an integer power
- How to take a root of a complex number
- Solved problems on taking roots of complex numbers
- Solved problems on arithmetic operations on complex numbers
Also, you have this free of charge online textbook in ALGEBRA-II in this site
- ALGEBRA-II - YOUR ONLINE TEXTBOOK.
The referred lessons are the part of this online textbook under the topic "Complex numbers".
Save the link to this textbook together with its description
Free of charge online textbook in ALGEBRA-II
https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson
into your archive and use when it is needed.
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Be aware: there is an ERROR in calculations by @josgarithmetic.