Homework Help: Math

Posted by Lisa on Monday, October 31, 2011 at 4:35pm.

Is this a rational, irrational, or not a real number the square root of 49 and the square root of -81

Math - Henry, Wednesday, November 2, 2011 at 4:59pm
sqrt49 is Rational.

sqrt(-81) = 9i, Imaginary.

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