SOLUTION: Could I please have some help with this problem. I am really back at this when it comes to square roots. Thank you (3- 2square root7)(3+ 2square root 7)

Question 327308:
Could I please have some help with this problem. I am really back at this when it comes to square roots. Thank you
(3- 2square root7)(3+ 2square root 7)
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
(3- 2square root7)(3+ 2square root 7)
This is similar to (a - b)*(a + b) = a^2 - b^2
-------------

=
= 9 - 4*7
= -19

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