Question #87c3e Precalculus Complex Numbers in Trigonometric Form Complex Number Plane 1 Answer eduarchitect ยท Stefan V. Jul 25, 2017 14+28i Explanation: 3(7+7i) =21+21i i(7+7i) = 7i-7 Then: 21+21i + 7i-7 = 14+28i 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 1585 views around the world You can reuse this answer Creative Commons License