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Pertanyaan

Nilai x yang memenuhi pertidaksamaan ∣ x ∣ 2 − ∣ x ∣ ≥ 2 adalah ....

Nilai x yang memenuhi pertidaksamaan  adalah ....

  1. 2 less or equal than x less or equal than 2

  2. -1less or equal than x less or equal than -2 atau 1less or equal than x less or equal than 2

  3. xless or equal than-1 atau xgreater or equal than1

  4. xless or equal than-2 atau xgreater or equal than2

  5. xless or equal than-1 atau xgreater or equal than2

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A. Acfreelance

Master Teacher

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Pembahasan

Nilai x yang memenuhi:x -2 atau x 2

Misal colon space open vertical bar straight x close vertical bar equals straight p  open vertical bar straight x close vertical bar squared minus open vertical bar straight x close vertical bar greater or equal than 2  straight p squared minus straight p greater or equal than 2  straight p squared minus straight p minus 2 greater or equal than 0  open parentheses straight p plus 1 close parentheses open parentheses straight p minus 2 close parentheses greater or equal than 0  straight p less or equal than negative 1 space atau space straight p greater or equal than 2  rightwards double arrow untuk space straight p less or equal than negative 1 colon  space space space space open vertical bar straight x close vertical bar less or equal than negative 1 space maka space tidak space ada space nilai space straight x space yang space memenuhi.  rightwards double arrow untuk space straight p greater or equal than 2 colon  space space space space space space space space space space space space space space space space space space space open vertical bar straight x close vertical bar greater or equal than 2  space space space space space space space space space space space space space space space straight x squared minus 4 greater or equal than 0  left parenthesis straight x space minus space 2 right parenthesis left parenthesis straight x space plus space 2 right parenthesis greater or equal than 0

Nilai x yang memenuhi:xless or equal than-2 atau xgreater or equal than2

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