Respuesta:
x = { - 4.36 ; 4.36 }
Explicación paso a paso:
x²+ 20 = 39
x²+ 20 - 39 = 0
x²+ (20 - 39) = 0
x² - 19 = 0
x² = 19
x = √19 y x = -√19
x = 4.36 y x = - 4.36
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Verified answer
Respuesta:
x = { - 4.36 ; 4.36 }
Explicación paso a paso:
x²+ 20 = 39
x²+ 20 - 39 = 0
x²+ (20 - 39) = 0
x² - 19 = 0
x² = 19
x = √19 y x = -√19
x = 4.36 y x = - 4.36