The domain of the function `f(x)=sqrt(10-sqrt(x^4-21 x^2))` is `[5,oo)` b. `[-sqrt(21),sqrt(21)]` c. `[-5,-sqrt(21)]uu[sqrt(21),5]uu{0]` d. `(-oo,-5)`

The domain of the function f(x)=sqrt(10-sqrt(x^(4)-21x^(2)))

The domain of the function f(x)=sqrt(10-sqrt(x^4-21 x^2)) is a) [5,oo) b. [-sqrt(21),sqrt(21)] c. [-5,-sqrt(21)]uu[sqrt(21),5]uu{0] d. (-oo,-5)

The domain of the function f(x)=sqrt(10-sqrt(x^4-21 x^2)) is a. [5,oo) b. [-sqrt(21),sqrt(21)] c. [-5,-sqrt(21)]uu[sqrt(21),5]uu{0] d. (-oo,-5] U [5,oo)

The domain of the function f(x)=sqrt(10-sqrt(x^4-21 x^2)) is a. [5,oo) b. [-sqrt(21),sqrt(21)] c. [-5,-sqrt(21)]uu[sqrt(21),5]uu{0] d. (-oo,-5] U [5,oo)

The domain of the function f(x)=sqrt(10-sqrt(x^(4)-21x^(2))) is [5,oo)b[-sqrt(21),sqrt(21)]c.[-5,-sqrt(21)]uu[sqrt(21),5]uu{0]d(-oo,-5)

Find the domain of sqrt(10-sqrt(x^(4)-21x^(2)))

(1)/(sqrt(21+4x-x^(2)))

(4)/(sqrt(10-2sqrt(21))) =______.

5sqrt21xx6sqrt10