SOLUTION: Factor(a+4)^2-2(a+4)+1

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Question 240476: Factor(a+4)^2-2(a+4)+1
Answer by jim_thompson5910(21669) About Me  (Show Source):
You can put this solution on YOUR website!
Hint: if we let z=a%2B4 and apply the appropriate substitutions, we go from %28a%2B4%29%5E2-2%28a%2B4%29%2B1 to z%5E2-2z%2B1. Now factor z%5E2-2z%2B1. Once you have z%5E2-2z%2B1 factored out, plug z=a%2B4 back in.