Question

$$\sqrt{ { x }^{ 2 } + } 11-x= \sqrt{ 3 }$$

Answer

x=-sqrt(3),sqrt(3)

Solution


Regroup terms.
\[11\sqrt{{x}^{2}+}-x=\sqrt{3}\]
Separate terms with roots from terms without roots.
\[11\sqrt{{x}^{2}+}=\sqrt{3}+x\]
Square both sides.
\[121{x}^{2}+=3+2\sqrt{3}x+{x}^{2}\]
Move all terms to one side.
\[121{x}^{2}-3-2\sqrt{3}x-{x}^{2}=0\]
Simplify  \(121{x}^{2}-3-2\sqrt{3}x-{x}^{2}\)  to  \(120{x}^{2}-3-2\sqrt{3}x\).
\[120{x}^{2}-3-2\sqrt{3}x=0\]
Use the Quadratic Formula.
\[x=\pm \sqrt{3}\]

Decimal Form: ±1.732051