Asked by teri

are these answers right?
1. ã-121 =
iã11

2. -2ã-144 =
2iã144 =
2i*12=24i

3. ã-75 =
i=ã75 =
iã5sq*3 =
5iã3

4. 5ãã-27 =
5iã27 =
5iã3sq*3 =
15iã3


what about
5. ã-6 * ã2 = ??
Answered by Reiny
I will assume that your ã was supposed to come out as √

I disagree with #2
-2√-144
= -2i√144
= -2i(12)
=-24i (you lost the negative sign)

Also I will assume that in#4, the double square root was a typo
If so, then the rest were correct.
Answered by Reiny
#5
√-6√2
= i√12
= 2i√3
Answered by teri
yes to #4 i don't know how they symbols don't come out when i type them one way.

Can you help with #5? I didn't get it.

Thank you.
Answered by teri
sorry, i see #5 THANK YOU!
Answered by Reiny
If you are on a Mac...
hold down the "Option" key and press V, then release to get the √
There are a whole bunch of those shortcuts, like hold down the "Option" key, and press p to get π

on a PC , I hold down the Alt key, and while holding it down, pres 251 on the number pad, then release. You should get a √ sign
Again just like on a Mac, you can experiment with these on a PC to get different symbols
e.g. try "Alt" 241 to get ±

Answered by bobpursley
±âˆš
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