Question

7- 27 - 2 under root 10 ​

Answer 1

Answer:

$7 - 27 - 2 \sqrt{10} \\ 20 - 2 \sqrt{10} \\ 20 - 2 \times \sqrt{2} \times \sqrt{5} \\ 20 - 2 \times 1.141 \times \sqrt{5} \\ 20 - 2.282 \times \sqrt{5} \\ 20 - 20282 \sqrt{5}$

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