Simplify each of the following expressions 1. (3 + 3square root ) (3 - 3 square root )
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(3+√3)(3-√3)
= (3)^2-(√3)^2. ( (a+b)(a-b) = a2-b2 ).
= 9-3 = 6.
= (3)^2-(√3)^2. ( (a+b)(a-b) = a2-b2 ).
= 9-3 = 6.
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