Respuesta :

aplejack21
The answer is 4.

20-8= 12
12/3= 4

Hope this helps. :)
zidaneboussofi2005

Answer:

3x² + 8 = 20

x = 2

Step-by-step explanation:

3 times x squared increased by 8 is 20

3x² + 8 = 20

3x² = 12

x² = 4

x = 2

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