How do you simplify -1-8i-4-i? Precalculus Complex Numbers in Trigonometric Form Complex Number Plane 1 Answer Alan N. Aug 28, 2016 -5-9i Explanation: z = -1-8i-4-i Sum the Real and Imaginary parts -> z= (-1-4) + (-8-1)i =-5-9i 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+4i in the complex plane? How do I graph the complex number 2-3i in the complex plane? How do I graph the complex number -4+2i in the complex plane? How do I graph the number 3 in the complex number plane? How do I graph the number 4i in the complex number plane? How do I use graphing in the complex plane to add 2+4i and 5+3i? How do I use graphing in the complex plane to subtract 3+4i from -2+2i? See all questions in Complex Number Plane Impact of this question 1788 views around the world You can reuse this answer Creative Commons License