government6 government6
  • 14-06-2016
  • Mathematics
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factor this expression as a difference of squares a^2+4a+4-b^2

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caylus
caylus caylus
  • 14-06-2016
Hello,

a²+4a+4-b²=(a+2)²-b²
=(a+2-b)(a+2+b)

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