This is so confusing

(8 + sqrt of -18) - (4 + 3 sqrt of 2i)

Printable View

- September 13th 2009, 11:07 AMtsmithSubtracting two complex Numbers
This is so confusing

(8 + sqrt of -18) - (4 + 3 sqrt of 2i) - September 13th 2009, 11:34 AMChris L T521
- September 13th 2009, 11:46 AMtsmith
So the 3 sqrt 2i will cancel each other out, right? So the answer would be 4?

- September 13th 2009, 12:57 PMVonNemo19
- September 14th 2009, 05:53 AMHallsofIvy
That is, assuming you meant and not . Not being able to tell is that "i" is inside or outside the square root is a good reason to always write "i"

**in front of**square roots, not behind them.