SOLUTION: Hi I can't seem to get the exact answer on this one. The length of each side of a square with an area of 1600 square inches is increased by 20 inches. What is the resulting area

Question 591442: Hi I can't seem to get the exact answer on this one.
The length of each side of a square with an area of 1600 square inches is increased by 20 inches. What is the resulting area?
I tried all sorts of things, but I just can get it right.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = the length of a side in inches
Let = the increase in area in in2 when
is increased by
given:
(1)
(2)
-----------------
(1)
(1)
and
(2)
(2)
Substitute this into (1)
(1)
(1)
(1)
(1)
The resulting area is in2
check:
(1)
(1)
(1)
(1)
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