Answer:
(x-1)²=8.
Step-by-step explanation:
1) if the length before decreasing is 'x', then after decreasing it is x-1;
2) then the area is (x-1)²=8.
PS. the length before decreasing is 1+2√2.
The answer is 3275/12=272.916666667/7.5=<span>36.3888888889</span>
So I labeled it as (1,7) as A, (-5,7) as B, and (-5,3) as C.So A is (0,5) and B as (-3,5) and then C as (-3,3).I think that would be correct.