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User avatar #68 - JosephDecreux (03/05/2013) [-]
root 4 is +/- 2
User avatar #70 to #68 - ansjovis (03/05/2013) [-]
why +/- ? 2 times 2 = 4
User avatar #78 to #70 - kalthorak (03/05/2013) [-]
-2 times -2=4
#73 to #70 - thilimilan (03/05/2013) [-]
(+2)x(+2)= 4..
(-2)x(-2)= 4...

squareroot of 4 is equal to positive or negative 2.
#72 to #70 - cuberkid (03/05/2013) [-]
-2 x -2 = 4 too
User avatar #71 to #70 - JosephDecreux (03/05/2013) [-]
sqrt(4)=2
therefore 2^2=4
however -2^2=4
hence sqrt(4)=+/-2
User avatar #84 to #71 - ansjovis (03/05/2013) [-]
ah, yes, i learned that in school, i thought you meant plus/minus 2, like, you get me right?
User avatar #80 to #76 - JosephDecreux (03/05/2013) [-]
Just felt like it, like people enjoy correcting grammar.
User avatar #81 to #80 - lwamotorsport (03/05/2013) [-]
That's nice Honey.
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