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NO!!! 5.1 is RATIONAL , because the ',1' moiety can be converted to a quotient(fraction).
Irrational Numbers are those were the decimals go to infinity AND the decimal digits are not in any regular order. More formally the decimal cannot be converted into a RATIO/QUOTIENT/FRACTION/
You are probably given 'pi ' = 3.14 in school . However 'pi' is irrational because the number is 3.141592654.... (The dots indicate mathemtically that it goes to infinity.
Supa-Dupa computers have calculated 'pi' to 50 billion places are still going.
Other irrational numbers are 'sqrt(2) = 1.414213562....
sqrt(3) = 1.7320508....
etc.,
The square roots of Prime Numbers are Irrational.
However. something like 4.333333.... is NOT irrational nor 43.434343.... be cause it can be converted into a fraction. By the above statement the decimals are in a regular order.
So treat all numbers are RATIONAL, except those by the above rule.
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Is the square root of 51 irrational?
yes, it is irrational. An irrational number can defined as a number that can not be expressed as a finite nor a repeating decimal.
Is 51 a irrational?
Any integer (whole number) is RATIONAL.
What is a rational number multiplied by an irrational number equal?
It can be a rational number or an irrational number. For example, sqrt(2)*sqrt(50) = 10 is rational. sqrt(2)*sqrt(51) = sqrt(102) is irrational.
Is an irrational number raised to an irrational power irrational?
yes
Can 2 irrational add to an irrational number?
Yes. The sum of two irrational numbers can be rational, or irrational.
