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Why is

[tex]\sqrt{9+36}[/tex]

= [tex]3\sqrt{5}[/tex]

and not 6.708 ?

I wasnt interested in maths at school but now i'm trying to self teach, so pardon my ignorance.

Edit: Ok i feel foolish now, no need to correct me as ive just worked out i WAS correct. I'm still unsure as to why it would be shown like this though.

[tex]\sqrt{9+36}[/tex]

= [tex]3\sqrt{5}[/tex]

and not 6.708 ?

I wasnt interested in maths at school but now i'm trying to self teach, so pardon my ignorance.

Edit: Ok i feel foolish now, no need to correct me as ive just worked out i WAS correct. I'm still unsure as to why it would be shown like this though.

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