Question 736995
AREA=LW
L=W+1
426=(W+1)W
426=W^2+W
W^2+W-426=0
{{{W = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
W=(-1+-SQRT(1^2-4*1*-426))/2*1
W=(-1+-SQRT(1+1704)/2
W=(-1+-SQRT1705)/2
W=(-1+-41.29/2
W=(-1+41.29)/2
W=40.29/2
W=20.1 ANS.
L=20.1+1
L=21.1 ANS.
PROOF:
426=21.1+20.1
426=425.2