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sqrt(16) = +/- 3

Both +4 & -4 are rational.

NB The square roots of prime numbers are irrational

e.g. sqrt(2) = 1.413213562....

sqrt(3) = 1.732050808....

sqrt(5) = 2.236067978....

et seq.,

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lenpollock

Lvl 16
2mo ago

What else can I help you with?