Question

Simplify (3+root3} {3-root 3}

Answer 1

Answer:

$(3 + \sqrt{3} )(3 - \sqrt{3} ) \\ \\ \\ here \: we \: use \: (a + b)(a - b) = {a}^{2} - {b}^{2} \\ \\ \\ = {3}^{2} - { \sqrt{3} }^{2} \\ \\ \\ = 9 - 3 \\ \\ \\ = 6$

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