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# I think I broke A Level Maths Watch

1. Ok, so you cant square root a negative number, but you can put a negative number to the power 1/2, which is the same as square rooting.

i.e root -5 = ERROR. -5^1/2 = -2.2360...

Obviously there is an explanation, and I would like somebody who might know the explanation to tell me
2. put (-5)
3. Its due to the order of operations, BODMAS or PEMDAS or whatever you call it. The exponent/power is calculated before multiplication/division, which is why you get an answer.

Calculators will treat as . If you try doing you won't get an answer (unless your calculator deals with complex numbers).
4. This does not explain why but if you do (-5)^(1/2) it comes up as error. And I was always told to make sure the thing I am raising to a power is in brackets therefore I think if you do -5 to the power of a half it is still an error.
5. I think what you did was square root 5 then multiplied by -1
6. LOOOOOOL, that just gives you the negative version of square root of 5.
7. Look, take 25 -> x*x (x must be same) gives you 25. So x can either be -5 or 5 it would give you positive 25. You can't have a positive and a negative combination that would give you negative 25. The answer is thus expressed in an imaginary unit.. complex numbers.

But it's great that you're trying.

I think what you did was square root 5 then multiplied by -1
Nope.
9. (Original post by jkpmc)
put (-5)
YES! Nice one. I was getting worried then...
10. Ahh the title made my day..
11. I was gonna say use some glue but ok.
12. Yep you need to use brackets

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Updated: March 26, 2013
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