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(q+1)(q-1)

math algebra
 Aug 24, 2014

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 #1
avatar+4473 
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Note that this a difference of squares:

where a = q and b = 1 (a^2 - b^2)

Therefore, our answer is q^2 - 1.

 Aug 24, 2014
 #1
avatar+4473 
+8
Best Answer

Note that this a difference of squares:

where a = q and b = 1 (a^2 - b^2)

Therefore, our answer is q^2 - 1.

AzizHusain Aug 24, 2014

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