Show an Expression is a Multiple of 4

**andyboy179** · May 5th 2011, 07:10 AM

hi,

m is an integer.

show that (m+2)^2-m^2-4 is a multiple of 4.

i really don't know how to do this so could someone please try and explain this sort of question to me please?!

thanks!

**FernandoRevilla** · May 5th 2011, 07:43 AM

Originally Posted by andyboy179

hi,m is an integer. show that (m+2)^2-m^2-4 is a multiple of 4.

$(m+2)^2-m^2-4=...=4m$

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