The square root of 7921 is 89.
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If: n squared -n -90 = 0 Then the solutions are: n = 10 or n = -9
n shaped
Oh, dude, N squared is just a fancy way of saying you multiply a number by itself. So, like, if N is 3, then N squared is 3 times 3, which equals 9. It's like math's way of saying, "Hey, let's make this more confusing than it needs to be."
2n plus 7 equals 19 2n equals 12 n equals 6
Oh, dude, the value of n is like 11 because 11 squared is 121, and 12 squared is 144. So, n is just the number between 11 and 12. Easy peasy lemon squeezy.