SOLUTION: Let width = w Area = {{{(length)*(width)}}} So {{{3x^2 + 5x = x*w}}} or {{{w = (3x^2 + 5x)/x = 3x + 5}}} So required width is (3x + 5).

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Let width = w Area = {{{(length)*(width)}}} So {{{3x^2 + 5x = x*w}}} or {{{w = (3x^2 + 5x)/x = 3x + 5}}} So required width is (3x + 5).      Log On