HELP ME . I NEED THE ANSWER NOW PLEASE HELP SMALLER X AND LARGER X

Answer:
smaller x= -12
larger x= 12
Step-by-step explanation:
[tex]3x^2+4=436\\[/tex]
subtract 4
[tex]3x^2=432[/tex]
divide by 3
[tex]x^2=144[/tex]
square root
[tex]\sqrt{x^2} =\sqrt{144}[/tex]
[tex]x= +-\sqrt{144}[/tex]
[tex]x= 12\\x= - 12[/tex]