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2 Answers
- ?Lv 610 years agoFavorite Answer
Square both sides, you get x-2 = 3 + 2sqrt(3x) + x.
That simplifies to 2sqrt(3x) = -5
Square both sides: 12x = 25
So x = 25/12.
But if you substitute into the original equation, sqrt(x-2) = sqrt(1/12) = sqrt(3)/6
While sqrt(3)+sqrt(x) = sqrt(3)+sqrt(25/12) = sqrt(3) + 5 sqrt(3)/6
Thus 25/12 is a superfluous root, and in fact there are no solutions.
This can also be seen by graphing y=sqrt(x-2) and y=sqrt(3)+sqrt(x). One is the square root graph shifted 2 units to the right, the other is the square root graph shifted sqrt(3) units upward. These two graphs do not intersect.
- 10 years ago
sqrt(x-2) = sqrt(3) +sqrt(x)
sqrt(x-2) - sqrt(3) = sqrt(x)
[sqrt(x-2) - sqrt(3)]^2 = x
x+1 - 2*sqrt(3x-6) = x
1 = 2*sqrt(3x-6)
1= 4*(3x-6)
25=12x
x=25/12
- hsueh010Lv 710 years ago
â(x-2) = â3 + âx
Square both sides
(â(x-2))² = (â3 + âx)²
x - 2 = 3 + 2â3âx + x
subtract 3 and subtract x from both sides:
x - 2 - 3 - x = 3 + 2â3âx + x - 3 - x
-5 = 2â3âx
square both sides
25 = 4(3)x
25/12 = x
- 10 years ago
square both sides to remove the squared...
that will give you x-2=(sqrt(3)+sqrt(x))(sqrt(3)+sqrt(x))
factorize x-2=(3+sqrt(3)sqrt(x)+sqrt(3)sqrt(x)+x)
x-2-3-x=2sqrt3sqrt(x)
-6/2=sqrt(3)sqrt(x)
-3=sqrt(3)sqrt(x)
-3/sqrt(3)=sqrt(x)
sqrt(3)=sqrt(x)
square both sides
3=x
x=3