I^21 Simplify 12 April 2018 0 Input interpretation simplify | i^21 Result i Polar coordinates r = 1 (radius), theta = 90° (angle) Related posts: I^9 Simplify Imaginary Number Cubed How To Find Distance Between Two Points Parabola X Intercept Parabola Find Vertex The History of Algebra Essay How To Find The Axis Of A Parabola X+2 x-2 simplify