Question

simplify :
$\frac{1}{ \sqrt{11 - 2 \sqrt{30} } } - \frac{3}{ \sqrt{7 - 2 \sqrt{10} } } - \frac{4}{ \sqrt{8 + 4 \sqrt{30 \ \: } } }$
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Answer 1

Answer:

know 5x5 = 25 and 6x6 = 36, so the square root of 30 is somewhere between 5 and 6. We'll start out by guessing 5.5.

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