Помогите пожалуйста, срочно надо! а) (x² - 4)(|x| - 7)(½x - 19) = 0б) (15 - |x|)(x² - 144)(0,3x -

Помогите пожалуйста, срочно надо!

а) (x² - 4)(|x| - 7)(½x - 19) = 0

б) (15 - |x|)(x² - 144)(0,3x - 9) = 0

Заранее спасибо!
- Предмет:
  Алгебра
- Автор:
  christinea0jk
- 6 лет назад

Ответы 1

а) (x² - 4)(|x| - 7)(½x - 19) = 0[x²-4=0⇒x²=4⇒x=2 U x=-2[|x|-7=0⇒|x|=7⇒x=7 U x=-7[1/2*x-19=0⇒1/2*x=19⇒x=38Ответ x={-7;-2;2;7;38}б) (15 - |x|)(x² - 144)(0,3x - 9) = 0[15-|x|=0⇒|x|=15⇒x=15 U x=-15[x²-144=0⇒x²=144⇒x=12 U x=-12[0,3x-9=0⇒0,3x=9⇒x=30Ответ x={-15;-12;12;15;30}
- Автор:
  hana
- 6 лет назад
- 0
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Помогите пожалуйста, срочно надо! а) (x² - 4)(|x| - 7)(½x - 19) = 0б) (15 - |x|)(x² - 144)(0,3x - 9) = 0Заранее спасибо!

Ответы 1

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Помогите пожалуйста, срочно надо!

а) (x² - 4)(|x| - 7)(½x - 19) = 0

б) (15 - |x|)(x² - 144)(0,3x - 9) = 0

Заранее спасибо!