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Ответ

Ответ дан
Simba2017

1)одз

2-x≥0;x≤2

|x|-3=0; x=-3

x=3 не подходит по одз

2-x=0;x=2

Ответ x={-3;2}

2)одз

x^2+2x-3≥0

D=4+12=16

x1=(-2+4)/2=1; x2=-3

x=(-∞;-3]U[2;+∞)-одз

x+2=0; x=-2 не подходит по одз

Ответ x={-3;2}

Ответ

Ответ дан
oganesbagoyan

https://znanija.com/task/34386625

* * * * * * * * * * * * * * * * * * * * * * * * * * *

1) ( |x| -3)* ⁶√(2-x) = 0

2)  (x+2) * ⁶√(x² +2x-3) = 0  

Ответ: 1) x = -3 ; x =2

            2) x = -3 ; x = 1.

Объяснение:

1) ( |x| -3)* ⁶√(2-x) = 0

ОДЗ:    2 - x ≥ 0 ⇔ x ≤ 2           * * * x ∈ ( - ∞; 2 ]  * * *

[  |x| -3 = 0 ; 2-x =0 .⇔ [ |x| =3 ; x =2.⇔[ x = -3 ; x = 3 ; x =2.   Но  x =3 ∉ ОДЗ,

ответ : x = -3 ; x =2.

---------------------------------------

2)  (x+2) * ⁶√(x² +2x-3) = 0  

ОДЗ: x² +2x -3 ≥ 0 ⇔ (x+3)(x-1)  ≥0   * * * x ∈ ( - ∞; -3 ] ∪[1;∞)* * *

[ x+2=0  ; x² +2x-3  = 0 . ⇔ [ x+2=0 ; (x+3)(x-1) = 0 . ⇔ [ x= -2 ; x= - 3 ;x=1.

Но  x = -2 ∉ ОДЗ,

ответ : x = -3 ; x = 1.

* * * (x+3)(x-1)  ≥0    например, методом интервалов  * * *

           " + "                           "-"               " +"

////////////////////////// [ -3] ------------- [1 ////////////////////////

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