Question 202375
 I am not sure which answer is right Express in simplest radical form text said to not use calculator. (sqrt2 - 3)(sqrt2 + 3) 
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Your problem follows the form (a-b)(a+b) = a^2-b^2
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Your product is (sqrt(2))^2 - 3^2 = 2 - 9 = -7
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Cheers,
Stan H.