document.write( "Question 40722: The area of a rectangle of length x is given by 3x^2 + 5x. Find the width of the rectangle. \n" ); document.write( "
Algebra.Com's Answer #26121 by tutorcecilia(2152)\"\" \"About 
You can put this solution on YOUR website!
The area of a rectangle of length x is given by 3x^2 + 5x. Find the width of the rectangle\r
\n" ); document.write( "\n" ); document.write( "Since the area of a rectangle is:\r
\n" ); document.write( "\n" ); document.write( "A = (length)(width) you will need two factors. One for the width and one for the length. \r
\n" ); document.write( "\n" ); document.write( "The easiest way is to factor 3x^2 + 5x:\r
\n" ); document.write( "\n" ); document.write( "(x)(3x + 5) Since (x) is the smallest factor it should be the width and (3x+5) will be the length.\r
\n" ); document.write( "\n" ); document.write( "To check, plug in the factors into the formula for an Area:\r
\n" ); document.write( "\n" ); document.write( "A = (length)(width)
\n" ); document.write( "A = (x)(3x + 5) = 3x^2 + 5x
\n" ); document.write( "
\n" );