2x + sqrt{x+23}=9

Question

2x + sqrt{x+23}=9

jennychan12 · Answer

move the 2x over, then square both sides

anonymous · Answer

@jennychan12 what answer do you get? i keep doing that but get the problem wrong

tkhunny · Answer

Show your work!  "Answers" are of far less value than "Work".

anonymous · Answer

Showing me the work would be very helpful!

tkhunny · Answer

There it is!!  Where did you get the "rad" on the right hand side?  Please discard it.

jennychan12 · Answer

rad(x+23) = (9-2x)
x-23 = (9-2x)^2
solve from there?

tkhunny · Answer

Indeed.  So, now answer my question.  Where did you get the one on the right hand side of the equation?  There wasn't one before.  Why did you decide to put one there?  There was one on the left hand side.  That one is good.

jennychan12 · Answer

you move the 2x to the other side?

tkhunny · Answer

Okay, then this should work, right?

2x + 5 = 12

Move 2x to the other side.

5 = rad(12 - 2x)