Решите уравнения: а) x^2=0,64 б) x^2-10=0 в) √x=9. Created by Chabella. algebra-ru

А) x^2=0,64x=±=0,8=-0,8б) x^2-10=0x^2=10==-в) √x=9=x=81

Решите уравнения: а) x^2=0,64 б) x^2-10=0 в) √x=9...

August 2022 1 7 Report

Решите уравнения:
а) x^2=0,64
б) x^2-10=0
в) √x=9

Answers & Comments

kapusteen А) x^2=0,64
x=± $\sqrt{0,64}$
$x_{1}$ =0,8
$x_{2}$ =-0,8
б) x^2-10=0
x^2=10
$x_{1}$ = $\sqrt{10}$
$x_{2}$ =- $\sqrt{10}$
в) √x=9
$( \sqrt{x} )^{2}$ = $9^{2}$
x=81

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