Respuesta :

Answer:

-2019

Step-by-step explanation:

x^2 = 2018 * 2020 + 1

x^2 = 4,076,361

x = -2019 or x = 2019

Since x < 0, then x = -2019

Answer:

x = 2019

Step-by-step explanation:

2018 * 2020 + 1 = 4076361

sqrt(4076361) = 2019

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