Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$( \sqrt{ 18 } -3)( \sqrt{ 18 } +3)$$

Answer

(3*sqrt(2)-3)*(3*sqrt(2)+3)

Solution


Simplify  \(\sqrt{18}\)  to  \(3\sqrt{2}\).
\[(3\sqrt{2}-3)(3\sqrt{2}+3)\]
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