Question

2 Efectuați calculele: a) √√2 + √2; b) 2√5 +3√5; c) √3+(-√3): d) √5-√5; e) 7√/7-2√7: 1) √6-3√6; g) √6 +2√6 +3√6: 4/10-3√10-3√/10; 4√2+(-3√2)+(-5√2); j) 2√3-(-3√3)-(-4√3); h) i) k) 8√5-√5-√5.

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Answer 1

Răspuns:

$\sqrt{ \sqrt{2} + \sqrt{2} } = \sqrt{4 } = 2$

$2 \sqrt{5} + 3 \sqrt{5} = 5 \sqrt{5}$

$\sqrt{3} + ( - \sqrt{3} ) =$

$\sqrt{5} - \sqrt{5} = 0$

$7 \sqrt{7} - 2 \sqrt{7} = 5 \sqrt{7}$

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