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Pertanyaan

Semua bilangan real x yang memenuhi x − 3 x ​ ≤ x + 2 x + 3 ​ adalah....

Semua bilangan real x yang memenuhi  adalah....

  1. x less or equal than negative 9 over 2 space a t a u minus 2 less than x less than 3

  2. negative 9 over 2 less or equal than x less than 3

  3. x less than negative 3 space a t a u minus 2 less than x less than 3

  4. negative 9 over 2 less than x less than negative 2 space a t a u space x greater than 3

  5. x less or equal than negative 9 over 2 space a t a u space x greater than 3

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N. Rahayu

Master Teacher

Mahasiswa/Alumni Universitas Negeri Jakarta

Jawaban terverifikasi

Pembahasan

Pembuat nol pembilang dan penyebut : Syarat penyebut : Buat garis bilangannya: Dari garis bilangan tersebut, maka diperoleh daerah himpunan penyelesaiannya adalah

fraction numerator x over denominator x minus 3 end fraction less or equal than fraction numerator x plus 3 over denominator x plus 2 end fraction fraction numerator x over denominator x minus 3 end fraction minus fraction numerator x plus 3 over denominator x plus 2 end fraction less or equal than 0 rightwards arrow s a m a k a n space p e n y e b u t fraction numerator x open parentheses x plus 2 close parentheses minus open parentheses x plus 3 close parentheses open parentheses x minus 3 close parentheses over denominator open parentheses x minus 3 close parentheses open parentheses x plus 2 close parentheses end fraction less or equal than 0 fraction numerator x squared plus 2 x minus x squared plus 9 over denominator open parentheses x minus 3 close parentheses open parentheses x plus 2 close parentheses end fraction less or equal than 0 fraction numerator 2 x plus 9 over denominator open parentheses x minus 3 close parentheses open parentheses x plus 2 close parentheses end fraction less or equal than 0

Pembuat nol pembilang dan penyebut :

2 x plus 9 equals 0 space space space space space space space space space space space space space space space space space space x minus 3 equals 0 space space space space space space space space space space space space space space space space space space x plus 2 equals 0 space x equals negative 9 over 2 space space space space space space space space space space space space space space space space space space space space space space space space space space x equals 3 space space space space space space space space space space space space space space space space space space space space space space space x equals negative 2

Syarat penyebut :

x minus 3 not equal to 0 space space space space space space space space space space space x plus 2 not equal to 0 space space space space space space x not equal to 3 space space space space space space space space space space space space space space space space space x not equal to negative 2

Buat garis bilangannya:

Dari garis bilangan tersebut, maka diperoleh daerah himpunan penyelesaiannya adalah x less or equal than negative 9 over 2 space a t a u minus 2 less than x less than 3

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