2) x^2 - 8|x| = 0
1-ый случай x( x - 8 ) = 0
x = 0; x = 8
2-ой случай x( x + 8 ) = 0
x = 0; x = - 8
Ответ: 0; 8 и - 8
3) x^2 - 4|x| + 5x = 0
1 -ый случай x^2 - 4x + 5x = 0
x^2 + x = 0
x( x + 1 ) = 0
x = 0; x = - 1 ( - 1 неудовл. неравенству)
2-ой случай x^2 + 4x + 5x = 0
x( x + 9 ) = 0
x = 0; x = - 9
Ответ: 0; - 9
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2) x^2 - 8|x| = 0
1-ый случай x( x - 8 ) = 0
x = 0; x = 8
2-ой случай x( x + 8 ) = 0
x = 0; x = - 8
Ответ: 0; 8 и - 8
3) x^2 - 4|x| + 5x = 0
1 -ый случай x^2 - 4x + 5x = 0
x^2 + x = 0
x( x + 1 ) = 0
x = 0; x = - 1 ( - 1 неудовл. неравенству)
2-ой случай x^2 + 4x + 5x = 0
x( x + 9 ) = 0
x = 0; x = - 9
Ответ: 0; - 9