Quadratic Equations

Solve the equations:

a: `({x^2+6}/{x^2-4})^2=({5x}/{4-x^2})^2`

b: `7(x+1/x)-2(x^2+1/x^2)=9`

c: `sqrt{x+2sqrt{x-1}}-sqrt{x-2sqrt{x-1}}=2`

Difficulty level (1 very easy - 10 very hard): 4

Algebra -> Equations Algebra -> Algebraic Techniques -> Roots / Radicals

Sources:

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