SOLUTION: I am not sure which answer is right Express in simplest radical form text said to not use calculator. (sqrt2 - 3)(sqrt2 + 3) I get (-1.59)(-1.59) or is the answer sqrt4 = 2 And (s

Question 202375This question is from textbook Algebra Structure and Method
: I am not sure which answer is right Express in simplest radical form text said to not use calculator. (sqrt2 - 3)(sqrt2 + 3) I get (-1.59)(-1.59) or is the answer sqrt4 = 2
And (sqrt3 - sqrt5)(sqrt3 - sqrt 5) don't they just cancel each other out to = 1
Thanks for any help This question is from textbook Algebra Structure and Method

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
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.
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