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#68 - JosephDecreux
Reply -2
(03/05/2013) [-]
root 4 is +/- 2
#70 to #68 - ansjovis
Reply 0
(03/05/2013) [-]
why +/- ? 2 times 2 = 4
#78 to #70 - kalthorak
Reply 0
(03/05/2013) [-]
-2 times -2=4
#73 to #70 - thilimilan
Reply 0
(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
Reply 0
(03/05/2013) [-]
-2 x -2 = 4 too
#71 to #70 - JosephDecreux
Reply -2
(03/05/2013) [-]
sqrt(4)=2
therefore 2^2=4
however -2^2=4
hence sqrt(4)=+/-2
#84 to #71 - ansjovis
Reply 0
(03/05/2013) [-]
ah, yes, i learned that in school, i thought you meant plus/minus 2, like, you get me right?
#76 to #71 - lwamotorsport
Reply -2
(03/05/2013) [-]
#80 to #76 - JosephDecreux
Reply -2
(03/05/2013) [-]
Just felt like it, like people enjoy correcting grammar.
#81 to #80 - lwamotorsport
Reply -2
(03/05/2013) [-]
That's nice Honey.