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entonces
a = 1/b
por lo tanto:
a + b = 4
1/b + b = 4
multiplicamos por b
1 + b^2 = 4b
b^2 - 4b + 1 = 0
aplicamos formula general:
b = (4 +-√(16 - 4))/2
b = (4 +-√(12))/2
tomamos la solución positiva
b = 3.73
por lotanto:
a + b = 4
a = 4 - 3.73
a = 0.27
así que
p = (0.27^2 + 3.73^2)^2
= 195.6