document.write( "Question 350123: i started this question however am unsure if it is correct question: √((a+4)²)\r
\n" ); document.write( "\n" ); document.write( "since we are looking for the square root of (a+4)^2 i would think that the answer is just a+4 because squaring it would be a^2+4^2 and the square root of that would be a+4 \r
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Algebra.Com's Answer #250235 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
First,
\n" ); document.write( " $\"%28a%2B4%29%5E2\"$ does not equal $\"a%5E2%2B4%5E2\"$ .
\n" ); document.write( "Using the FOIL method,
\n" ); document.write( " $\"%28a%2B4%29%5E2=%28a%2B4%29%28a%2B4%29\"$
\n" ); document.write( " $\"%28a%2B4%29%5E2=a%5E2%2B4a%2B4a%2B4%5E2\"$
\n" ); document.write( " $\"%28a%2B4%29%5E2=a%5E2%2B8a%2B4%5E2\"$
\n" ); document.write( "There is a cross product term.
\n" ); document.write( "As an example,
\n" ); document.write( " $\"%281%2B2%29%5E2=3%5E2=9\"$
\n" ); document.write( "If we did it like you showed,
\n" ); document.write( " $\"%281%2B2%29%5E2=1%2B4=5+\"$
\n" ); document.write( "which is clearly incorrect.
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\n" ); document.write( ".
\n" ); document.write( "The answer is $\"%28a%2B4%29\"$ but that may not be the complete answer because $\"-%28a%2B4%29\"$ is also an answer since $\"-%28a%2B4%29%2A%28-%28a%2B4%29%29=%28a%2B4%29%5E2\"$
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