document.write( "Question 755281: A cube has a surface area of 6x^2+84x+294. I need to find the length of a side. Help..please? \n" ); document.write( "
Algebra.Com's Answer #459568 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! 6x^2+84x+294 (surface area of cube) \n" ); document.write( ". \n" ); document.write( "Since there are 6 sides to a cube, each side must have an area of: \n" ); document.write( "(6x^2+84x+294)6 \n" ); document.write( "x^2+14x+49 (area of each side) \n" ); document.write( "factoring: \n" ); document.write( "(x+7)(x+7) \n" ); document.write( "(x+7)^2 \n" ); document.write( ". \n" ); document.write( "therefore: \n" ); document.write( "x+7 (length of each side) \n" ); document.write( " \n" ); document.write( " |