Question

срочно пжжжжжжжжжжжжжжжжжжжжж​

Answer 1

1.1. $10\sqrt{3} -\sqrt{48}-\sqrt{75} =10\sqrt{3} -\sqrt{3*16} -\sqrt{3*25} =10\sqrt{3} -4\sqrt{3} -5\sqrt{3} =\sqrt{3} (10-4-5)=\sqrt{3}$

2.$(\sqrt{2} -\sqrt{18} )\sqrt{2} =2-\sqrt{18} *\sqrt2} =2-\sqrt{36} =2-6=-4$

3.$(3-\sqrt{5} )^{2} =9-6\sqrt{5} +5=14-6\sqrt{5}$

2.$7\sqrt{2}$ і $\sqrt{99}$

$\sqrt{2} *\sqrt{49}$ і $\sqrt{99}$

$\sqrt{98} < \sqrt{99}$