Question 163347
11*14=154
(11-2X)(14-2X)=80
154-50X+4X^2=80
4X^2-50X+154-80
4X^2-50X+74=0
2(2X^2-25X+37)=0
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
X=(25+-SQRT[-25^2-4*2*37])/2*2
X=(25+-SQRT[625-296])/4
X=(25+-SQRT329)/4
X=(25+-18.13836)/4
X=25-18.13836)/4
X=6.8616/4
X=1.71541 INCH SQUARES NEED TO BE CUT FROM EACH CORNER.
PROOF:
(11-2*1.71541)(14-2*1.71541)=80
(11-3.43)(14-3.43)=80
7.57*10.57=80
80=80