Quote:
Originally Posted by Ganchrow
No, if you subtract (x-4) from both sides you get:
(x+2) - (x-4) = 1 + 2*sqrt(x-5) + (x-5) - (x-4)
6 = 2*sqrt(x-5) |
So then I will have to square both sides again?
36=1+x-5
32=x ... is this correct?
Quote:
Originally Posted by Ganchrow
No, you're not cross-multiplying correctly. Try doing it again carefully.
Numerator = 5 * (sqrt(13)+3)
Denominator = (sqrt(13)-3) * (sqrt(13)+3)
|
Num - 5(sqrt 13) + 15 ...what does this equal?
Den - 13-3 = 10 or 13-9=4 ...which one?