Identify all of the following solutions of square root of x minus 8 end root plus 8 equals x.

x = 8

x = 9

x = 8 and x = 9

None of the above

Question

Identify all of the following solutions of square root of x minus 8 end root plus 8 equals x.

 x = 8

 x = 9

 x = 8 and x = 9

 None of the above

dumbcow · Answer

$$x = \sqrt{x-8}+8$$

aum · Answer

$\Large \sqrt{x-8} + 8 = x$

Quickest way would be to try out each answer choice,

dumbcow · Answer

old fashioned way 

-move 8 over
-square both sides
-solve quadratic

anonymous · Answer

so  what is the answer?

mathstudent55 · Answer

Above you were told how to solve this equation.
What have you done so far?

mathstudent55 · Answer

Of course, you can just substitute each choice in the equation and see which ones work.

anonymous · Answer

i would think its none of the above but idk

mathstudent55 · Answer

Try them one by one.
What do you get for the first one, x = 8?

anonymous · Answer

oh its 8 right?

mathstudent55 · Answer

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