Question 313613
L=3W+2
A=LW
95=(3W+2)W
95=3W^2+2W
3W^2+2W-95=0
{{{W = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
W=(-2+-SQRT[2^2-4*3*-95])/2*3
W=(-2+-SQRT[4+1,140])/6
W=(-2+-SQRT1,144)/6
W=(-2+-33.823)/6
W=(-2+33.823)/6
W=31.823/6
W=5.304 ANS.
W=(-2-33.823)/6
W=-35.823/6
W=-5.967 ANS.