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a # b = (b - a)²
Hallar.
(1#3)#2
.....................................................
a # b
(1 # 3) # 2
(b - a)² # 2
(3 - 1)² # 2
(2)² # 2
4 # 2
a # b
Reemplazamos de nuevo los valores "a" y "b".
(b - a)²
(4 - 2)²
(2)²
4
Respuesta.
4