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05-07-2019
Mathematics

contestada

x to the 2nd power + 3=12

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wegnerkolmp2741o wegnerkolmp2741o

05-07-2019

Answer:

x = ±3

Step-by-step explanation:

x^2 +3 = 12

Subtract 3 from each side

x^2 +3-3 = 12-3

x^2 = 9

Take the square root of each side

sqrt(x^2) =±sqrt(9)

x = ±3

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