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Polynomials

Question

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Classify the following numbers as rational or irrational:

$left parenthesis 3 plus square root of 23 right parenthesis minus square root of 23$

Solution

left parenthesis 3 plus square root of 23 right parenthesis minus square root of 23

left parenthesis 3 plus square root of 23 right parenthesis minus square root of 23 equals 3 plus square root of 23 minus square root of 23 equals 3

which is a rational number.

Some More Questions From Polynomials Chapter

Find two rational numbers between 0.1 and 0.2.

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