Помогите сделать номер 314...

polunova2000 @polunova2000

July 2022 1 1 Report

Помогите сделать номер 314

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eugeke

Verified answer

$\sqrt{3+5x}=7$

$( \sqrt{3+5x})^2=7^2$

$3+5x=49$

$5x=49-3$

$5x=46$

$x= \frac{46}{5}$

$x=9 \frac{1}{5}$
****************************************

$\sqrt{10x-14}=11$

$( \sqrt{10x-14})^2 =11^2$

$10x-14=121$

$10x=135$

$x=13,5$ или $x=13 \frac{1}{2}$
**********************************************************

$\sqrt{ \frac{1}{3}x- \frac{1}{2} }=0$

$(\sqrt{ \frac{1}{3}x- \frac{1}{2} })^2=0^2$

$\frac{1}{3}x- \frac{1}{2}=0$

$\frac{1}{3}x= \frac{1}{2}$

$x= \frac{1}{2}*3$

$x= \frac{3}{2}$

$x=1 \frac{1}{2}$
******************************************************

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