How do you find abs(-3 - 2i )|−3−2i|? Precalculus Complex Numbers in Trigonometric Form Complex Number Plane 1 Answer José F. Mar 18, 2016 sqrt(13)√13 Explanation: It is like the Pythagoras theorem. color(red)(|a +bi|=sqrt(a^2+b^2)|a+bi|=√a2+b2 |-3-2i|=sqrt(3^2+2^2)=sqrt(13)|−3−2i|=√32+22=√13 Answer link Related questions What is the complex number plane? Which vectors define the complex number plane? What is the modulus of a complex number? How do I graph the complex number 3+4i3+4i in the complex plane? How do I graph the complex number 2-3i2−3i in the complex plane? How do I graph the complex number -4+2i−4+2i in the complex plane? How do I graph the number 3 in the complex number plane? How do I graph the number 4i4i in the complex number plane? How do I use graphing in the complex plane to add 2+4i2+4i and 5+3i5+3i? How do I use graphing in the complex plane to subtract 3+4i3+4i from -2+2i−2+2i? See all questions in Complex Number Plane Impact of this question 1283 views around the world You can reuse this answer Creative Commons License