dani0275 dani0275

04-03-2021
Mathematics

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How do i slove for x2 + 19 = 3

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

06-03-2021

Answer:

x = ± 4i

Step-by-step explanation:

x^2 + 19 = 3

Subtract 19 from each side

x^2 +19-19 = 3-19

x^2 = -16

Take the square root of each side

sqrt(x^2) = sqrt(-16)

x = sqrt(-1*16)

x =sqrt(-1) * sqrt(16)

We know that the square root of -1 is the imaginary number i

x = ± 4i

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