5. Factories a2+2bc+2ac+2ab+b2.
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Answer: (a+b) (a+b+2c)
Step-by-step explanation:The given can be written as:
a²+2ab+b²+2ac+2bc
= (a+b) ² +2c(a+b)
= (a+b) (a+b+2c)
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