tex]...

August 2021 1 20 Report

сократи дробь НА ПОМОЩ!!!

а)
[tex] \frac{5 - a {}^{2} }{ \sqrt{5} - a} [/tex]
б)
[tex] \frac{ \sqrt{3 - 3} }{ \sqrt{15 - \sqrt{5} } } [/tex]

Answers & Comments

Artem112

Verified answer

$\dfrac{5 - a {}^{2} }{ \sqrt{5} - a}=\dfrac{(\sqrt{5} )^2 - a {}^{2} }{ \sqrt{5} - a}=\dfrac{(\sqrt{5} -a)(\sqrt{5} +a) }{ \sqrt{5} - a}=\sqrt{5} +a$

$\dfrac{ \sqrt{3 - 3} }{ \sqrt{15 - \sqrt{5} } }=\dfrac{ \sqrt{0} }{ \sqrt{15 - \sqrt{5} } }=\dfrac{ 0}{ \sqrt{15 - \sqrt{5} } }=0$

2 votes Thanks 2

Bublik2223 ..

Segf Спасибо (. ❛ ᴗ ❛.)

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Verified answer

po kakoj formule mozhno vyschitat chislo molekul esli izvestno kolichestvo veshestva

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