Чему равна сумма |4-sqrt(19)|+|sqrt(19)-5| ?a) 2sqrt(19)-9 ; б) 1; в) 9; г) 9-2sqrt(19);. Created by Danechka111. algebra-ru

Чему равна сумма |4-sqrt(19)|+|sqrt(19)-5| ?a) 2sqrt(19)-9 ; б) 1; в) 9; г) 9-2s...

Danechka111 @Danechka111

July 2022 1 1 Report

Чему равна сумма |4-sqrt(19)|+|sqrt(19)-5| ?
a) 2sqrt(19)-9 ;
б) 1;
в) 9;
г) 9-2sqrt(19);

Answers & Comments

dtnth

Verified answer

$4=\sqrt{4^2}=\sqrt{16}$
$5=\sqrt{5^2}=\sqrt{25}$
$\sqrt{16}$
$4$
$|4-\sqrt{19}|=\sqrt{19}-4$
$|\sqrt{19}-5|=5-\sqrt{19}$
$|4-\sqrt{19}|+|\sqrt{19}-5|=\sqrt{19}-4+5-\sqrt{19}=1$
отвте: б)1

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