document.write( "Question 293261: a rectangle is 4 inches wide by 7 inches long. when the length and width are increased by the same amount, the area is increased by 26 square inches. what are the dimensions of the new rectangle \n" ); document.write( "
Algebra.Com's Answer #211711 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! (4+x)(7+x)=4*7+26 \n" ); document.write( "28+11x+x^2=28+26 \n" ); document.write( "x^2+11x+28-28-26=0 \n" ); document.write( "x^2+11x-26=0 \n" ); document.write( "(x+13)(x-2)=0 \n" ); document.write( "x-2=0 \n" ); document.write( "x=2 ans. for the increase. \n" ); document.write( "Proof: \n" ); document.write( "(4+2)(7+2)=4*7+26 \n" ); document.write( "6*9=54 \n" ); document.write( "54=54 \n" ); document.write( " |