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Printable Version of Topic "Mat h help please!"

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-- Posted by Wiccan girl101 at 6:44 pm on Dec. 9, 2008

ok, so I'm super dumb, when you have a negitive in a square root thingy, what do you do? I keep getting the wrong answers and my teacher won't help me. please help.


-- Posted by camillelong 26 at 6:45 pm on Dec. 9, 2008

isnt that when you use the 'i' thing?


-- Posted by hi sarah at 6:45 pm on Dec. 9, 2008

you cant have the square root of a negative.


-- Posted by alastrxxna at 6:45 pm on Dec. 9, 2008

Negative square roots are impossible.
You say: No solution. :D


-- Posted by LucidAssassin at 6:45 pm on Dec. 9, 2008

well either
a. you take out i (for imaginary number) which makes the number inside positive and continue from there or
b. you dont have an answer....impossible/ N/A would probably be the best options there


-- Posted by hi sarah at 6:46 pm on Dec. 9, 2008

you have to change the equation around so that the negative is outside of the square root, and you have to do this other shittt too


-- Posted by aleiram51 at 6:46 pm on Dec. 9, 2008

there's no solution if you're only using real numbers

if you're using imaginary numbers then it uses i

ex.

square root of -4 = 2i


-- Posted by TBMP at 6:46 pm on Dec. 9, 2008

you make it i root w/e the number that was negetive

for istance if it was root -16
i would be i X root 16


-- Posted by LucidAssassin at 6:46 pm on Dec. 9, 2008

Quote: from alastrxxna at 6:45 pm on Dec. 9, 2008


Negative square roots are impossible.
You say: No solution. :D

not if you take out i but yeah your answer is right if youre not using imaginary numbers


-- Posted by YarbDog at 6:47 pm on Dec. 9, 2008

ok...if you have like [-4  u take out the negative by making it i[4........so you just take the negative away but multiply it by and "i".....so i[4 = 2i

since the square root of 4 is two


-- Posted by hi sarah at 6:48 pm on Dec. 9, 2008

Quote: from aleiram51 at 1:46 pm on Dec. 10, 2008


there's no solution if you're only using real numbers

if you're using imaginary numbers then it uses i

ex.

square root of -4 = 2i


ya this yo.


-- Posted by Wiccan girl101 at 6:48 pm on Dec. 9, 2008

thanks guys! I'll try some of the things you suggested!


-- Posted by ineedhelp101 at 6:48 pm on Dec. 9, 2008

no solution


-- Posted by bmthislovex3 at 6:55 pm on Dec. 9, 2008

go to a math helping website


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