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Line 82:
Line 82: + + + + + + + + +
x = {3, -3}
::Yes they do: 2i x 2i = -4, also -2i x -2i = -4 - just as solving a quadratic equation that has no real roots can result in a pair of imaginary numbers.
::Yes they do: 2i x 2i = -4, also -2i x -2i = -4 - just as solving a quadratic equation that has no real roots can result in a pair of imaginary numbers.
::I think the hidden comment is out of date, from back when I didn't know the math markup at article creation. Anyone can delete it. [[User:Human|Human]] 15:08, 24 April 2007 (EDT)
::I think the hidden comment is out of date, from back when I didn't know the math markup at article creation. Anyone can delete it. [[User:Human|Human]] 15:08, 24 April 2007 (EDT)
Here's my solution to the challenge above:
3 × 3 = 9
-3 × -3 = 9
So, x = {3, -3}
--[[User:Ed Poor|Ed Poor]] 15:18, 24 April 2007 (EDT)