Mathematics: Need asap what’s the answer for this question

Need asap what’s the answer for this question

Ответ:

AM28

16.01.2022

Mathematics

Quick answer, it's B.

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Ответ:

luhmimi17

16.01.2022

Mathematics

For this case we must rationalize the following expression:

$\frac {2 \sqrt {5}} {- 3 \sqrt {50}}$

Multiply the numerator $\sqrt {50}:$

$\frac {2 \sqrt {5} * \sqrt {50}} {- 3 \sqrt {50} * \sqrt {50}} =\\\frac {2 \sqrt {5 * 50}} {- 3 (\sqrt {50}) ^ 2} =\\\frac {2 \sqrt {250}} {- 3 * 50} =\\\frac {2 \sqrt {250}} {- 150}$

Option B

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