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Update Problem006.js (TheAlgorithms#1537)

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Original file line number	Diff line number	Diff line change
`@@ -1,11 +1,8 @@`
`1`	`1`	`// https://projecteuler.net/problem=6`
`2`	`2`
`3`	`3`	`exportconstsquareDifference=(num=100)=>{`
`4`		`-letsumOfSquares=0`
`5`		`-letsums=0`
`6`		`-for(leti=1;i<=num;i++){`
`7`		`-sumOfSquares+=i**2// add squares to the sum of squares`
`8`		`-sums+=i// add number to sum to square later`
`9`		`-}`
	`4`	`+letsumOfSquares=(num)(num+1)(2*num+1)/6`
	`5`	`+letsums=(num*(num+1))/2`
	`6`	`+`
`10`	`7`	`returnsums**2-sumOfSquares// difference of square of the total sum and sum of squares`
`11`	`8`	`}`

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