document.write( "Question 247101: A picture frame measures 28 cm by 32 cm and is of uniform width.What is the width of the frame if the area of the picture is 192 cm^2??? \n" ); document.write( "
Algebra.Com's Answer #180333 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! (28-2x)(32-2x)=192 \n" ); document.write( "896-64x-56x+4x^2=192 \n" ); document.write( "4x^2-120x+896-192=0 \n" ); document.write( "4x^2-120x+704=0 \n" ); document.write( "4(x^2-30x+176)=0 \n" ); document.write( "4(x-22)(x-8)=0 \n" ); document.write( "x-8=0 \n" ); document.write( "x=8 ans. \n" ); document.write( "Proof: \n" ); document.write( "(28-2*8)(32-2*8)=192 \n" ); document.write( "(28-16)(32-16)=192 \n" ); document.write( "12*16=192 \n" ); document.write( "192=192\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |