Question

repede dau coroana.....
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Answer 1

Răspuns:

$4 \sqrt{3} + \sqrt{3} = 5 \sqrt{3}$

$5 \sqrt{8} - \sqrt{2} = 9 \sqrt{2}$

$2 \sqrt{3} \times \sqrt{3} = 6$

$2 \sqrt{8} \div 2 \sqrt{2} + 3 = 7$

$( \sqrt{2})^{2} = 2$

Answer 2

$\bf a) ~4\sqrt{3} +\sqrt{3} =\blue{\underline{5\sqrt{3} }}$

$\bf b) ~5\sqrt{8} -\sqrt{2} =5\sqrt{2^{3}} -\sqrt{2}=10\sqrt{2}-\sqrt{2} =\green{\underline{9\sqrt{2} }}$

$\bf c) ~2\sqrt{3} \cdot \sqrt{3} =2\cdot\big(\sqrt{3}\big)^2=2\cdot3 =\orange{\underline{6 }}$

$\bf d) ~2\sqrt{8} :2\sqrt{2} +3=2\sqrt{2^{3}} :2\sqrt{2}+3=4\sqrt{2}:2\sqrt{2}+3=2+3 =\purple{\underline{5}}$

$\bf e) ~\big(\sqrt{2} \big)^2=\sqrt{2} \cdot\sqrt{2}=\red{\underline{2 }}$