Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

## Post a reply

Write your message and submit
|
Options

## Topic review (newest first)

MathsIsFun
2005-09-21 18:18:23

Ohhh, multiplying negative square roots is a weird one.

Perhaps it should be:  ±4√(2)

notamathperson
2005-09-21 13:36:19

Thanks Kyle, I appreciate it.

kylekatarn
2005-09-21 13:28:28

√(-4).√(-8) = √(4)i.√(8).i = 2√(8).i² = -2√(8) = -2√(2³) = -2√(2.2²) = -4√(2)

#### Code:

```2 + 2i√14   2   2i√14   1   √14                   1+i√14
--------- = - + ----- = - + ---i  or, if you want ------
6       6     6     3    3                       3```
notamathperson
2005-09-21 12:19:11

I understand my homework pretty well this time, but I do have a couple questions:

Simplify (√-4) x (√-8)
I ended up getting 2√8, but I'm not sure if this is correct

Also, can this number be simplified any more: (2+2i√14) / 6?
Specifically, can the square root be simplified or could it look something like this: (1+i√14) / 3?