Opdracht 2
Opdracht 3
$\sqrt{3}+\sqrt{2}=\sqrt{5}$
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$\sqrt{3}\times\sqrt{2}=\sqrt{6}$
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$2\times\sqrt{3}=\sqrt{12}$
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$\sqrt{8}+\sqrt{18}=\sqrt{50}$
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$\sqrt { - 7} = - \sqrt 7$
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$\sqrt{7}\times-\sqrt{7}=7$
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$\frac{1}{2}\sqrt{2}=\sqrt{\frac{1}{2}}$
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$\sqrt{12}+\sqrt{27}=\sqrt{75}$
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