Answers

2016-08-01T12:00:03+08:00
Let us assume, that the given floor area has a condition that is, one of its length is 1 more than the other ;

L=x+1;
W=1;
A=LW;

72=(x+1)(x);
72=x^2 +x;
a quadratic equation that can be solved basically by factoring;

x^2 + x -72=0
(x-8)(x+9)=0;
x=8 units ;
to check;
L=8+1=9;
w=8;
A=72;
72=72
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