math help me!!

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is square root of 56 a rational number? explain uranswer using what you know about rational and irrational numbers.
thnx alot!

  • math help me!! -

    No, it is not rational.

    sqrt(56)=sqrt(4*14)=sqrt(4*2*7)

    sqrt2, sqrt 7 are irrational. The only square roots that are rational are squares of rational numbers.

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