Answer:
x=3
Step-by-step explanation:
I am assuming that your equation is:
[tex] \sqrt{8x + 12} + 4 = 10[/tex]
Subtract 4 from both sides to get:
[tex] \sqrt{8x + 12} = 6[/tex]
Square both sides to get:
[tex](\sqrt{8x + 12})^{2} = {6}^{2} [/tex]
[tex]8x + 12 =3 6[/tex]
[tex]8x =24[/tex]
Divide both sides by 8 to get:
[tex]x = \frac{24}{8} = 3[/tex]