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Polynomials

Question

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Simplify each of the following expressions:

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

Solution

left parenthesis 3 plus square root of 3 right parenthesis left parenthesis 3 minus square root of 3 right parenthesis space equals space left parenthesis 3 right parenthesis squared minus left parenthesis square root of 3 right parenthesis squared because space space left parenthesis straight a plus square root of straight b right parenthesis space left parenthesis straight a minus square root of straight b right parenthesis end root equals straight a squared minus straight b space space space space space equals space 9 minus 3 space equals space 6

Some More Questions From Polynomials Chapter

Find two rational numbers between 0.1 and 0.2.

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