How do you factor $a^{2} + 2 a + a b + 2 b$ $a^2 + 2a +ab +2b$ ?

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Answer 1 · 2015-11-16T09:21:18

It is

$a^{2} + 2 a + a b + 2 b = a \cdot (a + b) + 2 \cdot (a + b) = (a + 2) \cdot (a + b)$ $a^2+2a+ab+2b=a*(a+b)+2*(a+b)=(a+2)*(a+b)$

How do you factor a2+2a+ab+2ba^2 + 2a +ab +2b?