Answer
The actual answers are:
a) 441
b) 1681
c) 5041
d) 1024
e) 2704
f) 6724
Work Step by Step
In order to solve this problem, we must choose two numbers that are easy to square:
a) $ 20^2 + 2(20)(1) + 1^2 = 441$
b) $40^2 + 2(40)(1) + 1^2 = 1681$
c) $70^2 + 2(70)(1) + 1^2 = 5041$
d) $ 30^2 + 2(30)(2) + 2^2 = 1024$
e) $ 50^2 + 2(50)(2) + 2^2 = 2704$
f) $ 80^2 + 2(80)(2) + 2^2 = 6724$
