SOLUTION: Please factor: (a + 4)^2 - 2(a + 4) + 1

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Question 167373This question is from textbook Introductory Algebra
: Please factor:
(a + 4)^2 - 2(a + 4) + 1 This question is from textbook Introductory Algebra

Answer by aswathytony(47) About Me  (Show Source):
You can put this solution on YOUR website!

(a +4 )^2 - 2(a + 4 ) +1 =0
consider a + 4 = x
i.e . x^2 - 2x +1 =0
x^2 -1x -1x +1 = 0
x ( x - 1 ) - 1 ( x -1) = 0
(x -1) (x -1) =0
x = 1
but x = a + 4
a + 4 = 1
a = 1 - 4
= 1 + -4 = -3