Because answer will definitely fall within the range but not necessarily group together evenly throughout the whole range.
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I don't think there is any easy way to estimate it; just use the quadratic equation to calculate the solutions. You can round some of the numbers to get an estimate; in this case you might even do most of the calculation in your head, but it's probably easier just to do the full calculation.
37.69911184307752
The best estimate is the true value.512 = 2^9 = 2^7*2^2 = 128*4Then 512*25 = (128*4)*25 = 128*(4*25) = 128*100 = 12800.
The range of a function is the set of all possible output values.
None, since 57 is NOT an irrational number.