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27-07-2020
Mathematics

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solve for the variable x^2 - 8 = -1 Show all work please

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wegnerkolmp2741o wegnerkolmp2741o

27-07-2020

Answer:

x = ±sqrt(7)

Step-by-step explanation:

x^2 - 8 = -1

Add 8 to each side

x^2 - 8+8 = -1+8

x^2 = 7

Take the square root of each side

sqrt(x^2) = ±sqrt(7)

x = ±sqrt(7)

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