# A simple method

Calculus Level 1

To find square roots, one can use the following method. Let $$A$$ be the number you want to find the square root of. Make an initial guess.

Let your guess be $$x_{0}$$. Then $$x_{a+1}$$ = $$1/2 * ( x_{a} + (A/ x_{a}))$$

Using this method, what is $$x_{2}$$ if $$A = 10$$ and $$x_{0} = 2$$?

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