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Pertanyaan

Himpunan penyelesaian yang memenuhi pertidaksamaan kuadrat 10 − x − 2 x 2 ≥ 0 , x ∈ R adalah ....

Himpunan penyelesaian yang memenuhi pertidaksamaan kuadrat adalah ....

  1. open curly brackets x left enclose negative 5 over 2 less or equal than x less or equal than 2 comma space x element of R end enclose close curly brackets

  2. open curly brackets x left enclose negative 2 less or equal than x less or equal than 5 over 2 comma space x element of R end enclose close curly brackets

  3. open curly brackets x left enclose negative 2 less or equal than x less or equal than 5 comma space x element of R end enclose close curly brackets

  4. open curly brackets x left enclose negative 5 less or equal than x less or equal than 2 comma space x element of R end enclose close curly brackets

  5. open curly brackets x left enclose 2 less or equal than x less or equal than 5 comma space x element of R end enclose close curly brackets

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Y. Endah

Master Teacher

Mahasiswa/Alumni Institut Teknologi Bandung

Jawaban terverifikasi

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Pembahasan

10 minus x minus 2 x squared greater or equal than 0  2 x squared plus x minus 10 less or equal than 0  left parenthesis 2 x plus 5 right parenthesis left parenthesis x minus 2 right parenthesis less or equal than 0  x space equals space minus 5 over 2 space a t a u space x equals 2

Maka space himpunan space penyelesaian space equals open curly brackets straight x vertical line minus 5 over 2 less or equal than straight x less or equal than 2 comma space straight x element of straight R close curly brackets

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