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Published byJayden Lopez Modified over 2 years ago

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All positive real numbers have two square roots, a positive square root and a negative square root. A square root is written with the (radical symbol). You need to approximate a square root if the radicand is a whole number that is not a perfect square.

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The root of a whole number that is not a perfect square is an example of an irrational number. 945= The decimal form of an irrational number neither terminates or repeats.

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In the example to the left, all are real numbers. Real Numbers Rational Numbers Integers Whole #s Irrational Numbers

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Radicand- the number or expression inside a radical symbol Perfect Square- the square of an integer Square Root- Finding the square root of a number is the inverse operation of squaring that number. Remember, the square of a number is that number times itself. Real Number- the set of all rational and irrational numbers Irrational Number- a number that cannot be written as a quotient of two integers

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