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Ivan
3 years ago
9

Which is the first step in simplifying the expression?

Mathematics
2 answers:
Neko [114]3 years ago
6 0
Easy, multiply the expression by 2+divided by 2 over 3

In any other case, its D
Elenna [48]3 years ago
5 0
\dfrac{3}{2 +  \sqrt{2} }

To rationalise the denominator, this is a standard step:
= \dfrac{3}{2 + \sqrt{2} } \times  \dfrac{2 - \sqrt{2}}{2 - \sqrt{2}}

Answer: Option A

---------------------------------------------------------------------------------------------------

Let me continue to complete the question, though it is not ask for

= \dfrac{3(2 - \sqrt{2})}{(2 + \sqrt{2)}(2 - \sqrt{2}) }

= \dfrac{3(2 - \sqrt{2})}{4 - 2 }

= \dfrac{6 - 2\sqrt{2}}{2 }
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