document.write( "Question 440777: the length of a rectangular frame is 9 cm more than the width. area inside is 90 sq. cm. what's the width of the frame? \n" ); document.write( "
Algebra.Com's Answer #304406 by jorel1380(3719)\"\" \"About 
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x(x+9)=90
\n" ); document.write( "x2+9x=90
\n" ); document.write( "x2+9x-90=0
\n" ); document.write( "(x+15)(x-6)=0
\n" ); document.write( "x=-15 or 6
\n" ); document.write( "Throwing out the negative answer, we get the width to be 6 cm., and the length to be 15 cm..
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