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Calculați
[tex] \sqrt{ {13}^{2} } + \sqrt{121 } [/tex]
[tex] \sqrt{18 } - \sqrt{162} + \sqrt{98} [/tex]
[tex](2 \sqrt{20} - 3 \sqrt{45} ) \div (5 \sqrt{5)} [/tex]


Răspuns :

13+11=24

3√2-9√2+7√2=√2

(2·2√5-3·3√5):5√5=(4√5-9√5):5√5=(-5√5):5√5=-1

Răspuns:

√13²+√121 = 13+11 = 24

√18 - √162+√98 = 3√2-9√2+7√2 = (3-9+7)√2 =

= (-6+7)√2 = 1√2 = √2

(2√20-3√45):5√5 = (4√5-9√5):5√5 = (-5√5):5√5 = -1

==EVERGREEN==