js에서 Square을 쓰는 3가지 방법

1. Math.pow()
2. Using Exponentation
3. x * x

1. Using Math. library, with pow() method, it looks like down this

   Math.pow(x,2) => means x to the 2 (square)

2. Using Exponentation, looks more simple

    x **2 => means square of x

3. At second way to square number(x) used x ** 2, but in this equation we can rewrite as x * x. so is it

    x*x => means square of x

구글링하면서 알게된것인데 100% 신뢰는 되지 않지만 성능은 3번이 가장 좋다고 합니다.