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How do you work out 7 - square root of 5 squared?
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What is the square route of 5 squared minus 4 squared?
Well, isn't that a happy little math problem! The square root of 5 squared is 5, and the square root of 4 squared is 4. So, when you subtract 4 squared from 5 squared, you get 9. Remember, there are no mistakes in math, just happy little accidents!
How do you simplify 5 root 21 squared?
5*root(21^2) = 5*21 = 105
What is b if 3b squared equals 5?
b is the square root of 5/3
What is the square root of 5 square root of 5 and so on?
Call this number "x". In this case:x = root(5 root(5 root(5 root(5... Since the expression inside the first root is equal to the entire expression, you get: x = root(5 x) Squaring both sides, to get rid of the rood, you get: x squared = 5x x squared - 5x = 0 x(x - 5) = 0 So, x is either equal to 0, or to 5. Indeed, if you start with any number and repeatedly multiply by 5 and then take the square root, you get closer and closer to 5... unless you start with zero, in which case you get exactly zero.
