Question

5×radical 81-radical 64×radical 194+2×radical 100
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Answer 1

$5 \times \sqrt{81 - \sqrt{64 } } \times \sqrt{194} + 2 \times \sqrt{100} = 5 \times 9 - 8 \times \sqrt{194} + 2 \times 10 = 45 - 8 \times \sqrt{194} + 20 = - 8 \times \sqrt{194} + 65$

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