Answer:
D)
Step-by-step explanation:
First we have to subtract 5 from both sides
[tex]\sqrt{x-6} +5=12\\\\\sqrt{x-6}+5-5=12-5\\\\\sqrt{x-6}=7[/tex]
Now, square both sides
[tex](\sqrt{x-6})^{2}=7^{2}[/tex]
x - 6 = 49
Now, add 6 to both sides
x - 6 +6 = 49 + 6
x = 55
