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24-03-2018
Mathematics

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3x to the second power -8 = 40? what is x?

Respuesta :

24-03-2018

3x^2 - 8= 40
add 8 to both sides
3x^2= 48
divide both sides by 3
x^2= 16
take the square root of x and 16
x= 4

ANSWER: x=4

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