Posted by Tshepiso mphehlo on Wednesday, March 9, 2011 at 12:53am.
X(x+1)+(x+1)(x+2)
Take out the common factor and add:
(x+1)[x + x+2]
=(x+1)[2x+2]
Take out the 2 as a common factor:
=(x+1)[2(x+1)]
=2(x+1)²
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