document.write( "Question 419045: The area of a square board is 4x2(squared)+56x+49. A)find an expression in terms of x for the perimeter of the board. B) find the perimeter when x=3 \n" ); document.write( "

Algebra.Com's Answer #293107 by dnanos(83) $\"\"$ $\"About$

You can put this solution on YOUR website!
(A)~~~Area
\n" ); document.write( " $\"%284x%29%5E2%2B56x%2B49\"$ =
\n" ); document.write( " $\"%284x%29%5E2%2B2%2A4x%2A7%2B7%5E2\"$ =
\n" ); document.write( " $\"%284x%2B7%29%5E2\"$
\n" ); document.write( "The side of the square is: 4x+7
\n" ); document.write( "The perimeter is:
\n" ); document.write( "4(4x+7)=
\n" ); document.write( "16x+28
\n" ); document.write( "(B)~~~ when x=3
\n" ); document.write( "the perimeter is:
\n" ); document.write( " $\"16x%2B28=16%2A3%2B28=48%2B28=76\"$ \n" ); document.write( "

\n" );