How do you rationalize the denominator and simplify $\frac{12}{5 - 2 \sqrt{7}}$ $12/(5-2sqrt7)$ ?

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Answer 1 · 2015-04-10T14:40:44

You may try multiplying top and bottom by $5 + \sqrt{7}$ $5+sqrt(7)$ to get:
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How do you rationalize the denominator and simplify 12/(5-2sqrt7)125−2√712/(5-2sqrt7)?