Answer:
x = ± 4
Step-by-step explanation:
You need to get [tex]x^2[/tex] by itself, and to do this, you divide both sides by 3, like so:
[tex]3x^2 = 48\\x^2 = 16[/tex]
Now take the square root of both sides:
[tex]\sqrt{x^2} =\sqrt{16} \\[/tex]
x = ± 4
