Respuesta :

wegnerkolmp2741o

Answer:

x =  ±2

Step-by-step explanation:

3x^2-4=8

Add 4 to each side

3x^2-4+4=8+4

3x^2 = 12

Divide by 3

3x^2 /3 = 12/3

x^2 = 4

Take the square root of each side

sqrt(x^2) = ±sqrt(4)

x =  ±2

09pqr4sT

Answer:

[tex]x=\± 2[/tex]

Step-by-step explanation:

[tex]3x^2-4=8[/tex]

[tex]3x^2-4+4=8+4[/tex]

[tex]3x^2=12[/tex]

[tex]\displaystyle \frac{3x^2}{3}=\frac{12}{3}[/tex]

[tex]x^2=4[/tex]

[tex]x=\± \sqrt{4}[/tex]

[tex]x=\± 2[/tex]

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