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p = 210m
largo: x
ancho: a
a . x = 2700
2a + 2x = 210
a + x = 105.................a . x = 2700
x = 105-a ............... a . (105-a) = 2700
105a - a² = 2700
a² - 105a + 2700 = 0
(a - 45)(a - 60) = 0
Por lo tanto:
largo: 60
ancho: 45
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