a( 1+x)2=a( 1+44%)，
X=20% or x=-220% (omitted);
(2)a+a( 1+20%)+a( 1+20%)2 = 18.2，
a=5，
The output in June is 2. 1×5= 10.5,
The output in May is: 10.5-4.668=5.832,
The output in March is 5×( 1+20%)2=7.2,
Assuming that the average percentage of decline in April and May is y,
7.2( 1-y)2=5.832，
Y= 10% or y= 190% (omitted),
The output in April was 7.2×( 1- 10%)=6.48.
6.48+5.832+ 10.5=22.8 12.
A: The output in the second quarter was 22.85438+02 tons.