factories the following .. x^2+x+1
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x^2+x+1
=x^2 +2x+1-x
=(x+1)^2-(sqrt(x))^2
=(x+1+sqrt(x))-(x+1-sqrt(x))
=x^2 +2x+1-x
=(x+1)^2-(sqrt(x))^2
=(x+1+sqrt(x))-(x+1-sqrt(x))
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=x*2+2x+1+x. =(x+1)*2-(sqrt(x))*2. =(x+1+sqrt(x))-(x+1-sqrt(x))
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