document.write( "Question 330183: Please help. I need to factor:
\n" ); document.write( "(a + 4)^2 - 2(a + 4) + 1 \n" ); document.write( "

Algebra.Com's Answer #236613 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Use a substitution, let $\"u=a%2B4\"$
\n" ); document.write( " $\"u%5E2-2u%2B1=%28u-1%29%5E2\"$
\n" ); document.write( " $\"%28a%2B4%29%5E2-2%28a%2B4%29%2B1=%28a%2B4-1%29%5E2\"$
\n" ); document.write( " $\"%28a%2B4%29%5E2-2%28a%2B4%29%2B1=%28a%2B3%29%5E2\"$ \n" ); document.write( "

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