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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 -...

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What can melt your heart?

Scene 1- i was sent for monitoring class 3rd Me- hey, what's your name? (to everyone one by one) Eve...

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Why did my ex replace me so fast?

It’s a rebound they’re basically trying to use someone else to replace the feelings they had with yo...

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Is GATE tougher than JEE?

"Sister: 'Gate is easy,' said my sister who scored well in JEE Mains and Advanced but wasn’t happy w...