When asked to find the distance between the complex points 3 + 8i and 7 + 6i, zach showed the work below. He asked his friend zöe to find his mistake, and she correctly told him that he should have subtracted the real and imaginary portions of the point in the same order. Left the i out of the computations when finding distance in the complex plane. Remembered that –4 squared should be –16, not 16. Simplified to , not to.