[R] applying uniroot function to each element in vector

[Dale]

If I have a vector of n elements, e.g. a vector of length 4 with elements 10,
20, 30, 40 and want to find the different values of x such that x^2=10,
x^2=20, x^30 and x^2=40, how could I do this in R? I'm thinking of using the
uniroot function, but am finding difficult applying it to a vector. Thanks

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