127 is rational
the number 127 is rational because it can be expressed as the quotient of two integers p and q in the form:
which can be represented as
while if the number is , then it would be irrational because the square root of 127 gives a decimal number that goes on and on and cannot be represented as a fraction.
(a+5) (a+5) - b²
a²+10a+25-b² = (a-5) (a-5) ..easy xd
-b² stays constant ..obviously xd
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