How do you multiply #(2-3i)(1+5i)#? Precalculus Complex Numbers in Trigonometric Form Multiplication of Complex Numbers 1 Answer Krzysztof S. · Stefan V. Nov 7, 2016 #17 + 7i# Explanation: #2+10i-3i-15i^2# #=2+7i-15*(-1)# #=2+7i+15# #=17+7i# Note #i^2=(-1)# Answer link Related questions How do I multiply complex numbers? How do I multiply complex numbers in polar form? What is the formula for multiplying complex numbers in trigonometric form? How do I use the modulus and argument to square #(1+i)#? What is the geometric interpretation of multiplying two complex numbers? What is the product of #3+2i# and #1+7i#? How do I use DeMoivre's theorem to solve #z^3-1=0#? How do I find the product of two imaginary numbers? How do you simplify #(2+4i)(2-4i)#? How do you multiply #(-2-8i)(6+7i)#? See all questions in Multiplication of Complex Numbers Impact of this question 2637 views around the world You can reuse this answer Creative Commons License