Question
Simplify the following expression:$(\sqrt{8}-\sqrt{2})(\sqrt{8}+\sqrt{2})$
✓
Answer
$(\sqrt{8}-\sqrt{2})(\sqrt{8}+\sqrt{2})$
As we know, $(a+b)(a-b)=\left(a^2-b^2\right)$
$\sqrt{8\times8}-\sqrt{2\times2}=8-2$
$=6$
As we know, $(a+b)(a-b)=\left(a^2-b^2\right)$
$\sqrt{8\times8}-\sqrt{2\times2}=8-2$
$=6$
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