document.write( "Question 479146: A length equals x+5 inches a height equals x-5 and an area equal 56 square I need to find the length and height don't understand the steps help me please \n" ); document.write( "
Algebra.Com's Answer #328428 by ankor@dixie-net.com(22740)\"\" \"About 
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A length equals x+5 inches a height equals x-5 and an area equal 56 square I need to find the length and height.
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\n" ); document.write( "Area: L * W = 56 sq/inches, therefore
\n" ); document.write( "(x+5)(x-5) = 56
\n" ); document.write( "FOIL
\n" ); document.write( "x^2 - 5x + 5x - 25 = 56
\n" ); document.write( "Combine like terms
\n" ); document.write( "x^2 = 56 + 25
\n" ); document.write( "x^2 = 81
\n" ); document.write( "x = \"sqrt%2881%29\"
\n" ); document.write( "x = 9
\n" ); document.write( "therefore
\n" ); document.write( "9 + 5 = 14 in is the length
\n" ); document.write( "and
\n" ); document.write( "9 - 5 = 4 in is the height
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\n" ); document.write( "Check this by finding the area using these values
\n" ); document.write( "14 * 4 = 56
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