Logo

β€”β€” indirects on kuorans, irl and idols

πŸ°πŸ“ (メ﹏メ) : can i kiss you ? can i hug you ?? β€Ž β€Ž β€Ž β€Ž β€Ž β€Ž β€Ž β€Ž β€Ž β€Ž β€Ž β€Ž β€Ž β€Ž β€Ž β€Žβ€Žβ€Ž β€Ž β€Ž β€Ž β€Ž β€Ž β€Ž β€Ž β€Ž β€Žβ€Ž...

Why is (n-1)(n+1)=n^2-1?

The basic answer is that you cross-multiply the values in each factor: (n - 1)(n + 1) n^2 - n + n -...