document.write( "Question 179282: Matt makes a cardboard frame to go around the edges of an 8cm * 10cm photograph. The frame has an area of 63 square centimeters and is of equal width all the way around. What is the width? \n" ); document.write( "
Algebra.Com's Answer #134383 by edjones(8007)\"\" \"About 
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L*w=A
\n" ); document.write( "10*8=80
\n" ); document.write( "Let x be the increase in length or width in the frame compared to the picture.
\n" ); document.write( "(x+10)(x+8)=63+80
\n" ); document.write( "x^2+18x+80=143
\n" ); document.write( "x^2+18x-63=0
\n" ); document.write( "(x+21)(x-3)=0
\n" ); document.write( "x=3
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\n" ); document.write( "Ed
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