Question
Simplify the following expression:
$(3+\sqrt{3})(3-\sqrt{3})$
$(3+\sqrt{3})(3-\sqrt{3})$
✓
Answer
$(3+\sqrt{3})(3-\sqrt{3})$
As we know, $(a+b)(a-b)=\left(a^2-b^2\right)$
$=9-\sqrt{3\times3}$
$=6$
As we know, $(a+b)(a-b)=\left(a^2-b^2\right)$
$=9-\sqrt{3\times3}$
$=6$
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