Question

1 -√200+√8+√50
2- √72-√50+√162
3- √18-√31+√72
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Answer 1

Ответ:вот

Объяснение:

Answer 2

$\displaystyle\bf\\1)\\\\\sqrt{200} +\sqrt{8} +\sqrt{50} =\sqrt{100\cdot 2} +\sqrt{4\cdot 2} +\sqrt{25\cdot 2} =10\sqrt{2} +2\sqrt{2} +5\sqrt{2} =17\sqrt{2} \\\\\\2)\\\\\sqrt{72}-\sqrt{50} +\sqrt{162} =\sqrt{36\cdot 2} -\sqrt{25\cdot 2} +\sqrt{81\cdot 2} =6\sqrt{2} -5\sqrt{2}+9\sqrt{2} =10\sqrt{2} \\\\\\3)\\\\\sqrt{18} -\sqrt{32} +\sqrt{72} =\sqrt{9\cdot 2} -\sqrt{16\cdot 2}+\sqrt{36\cdot2}=3\sqrt{2} -4\sqrt{2} +6\sqrt{2} =5\sqrt{2}$