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Pertanyaan

Penyelesaian dari 3 2 x + 3 − 84 . 3 x + 9 ≥ 0 adalah ....

Penyelesaian dari  adalah ....

  1. -1 ≤ x 2

  2. -2 ≤ x ≤ 1

  3. x ≤ -2 atau x ≥ -1

  4. x ≤ -2 atau x ≥ 1

  5. x ≤ 1 atau x ≥ 2

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F. Kurnia

Master Teacher

Mahasiswa/Alumni Universitas Jember

Jawaban terverifikasi

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Pembahasan

begin mathsize 14px style 3 to the power of 2 straight x plus 3 end exponent minus 84 straight space. straight space 3 to the power of straight x plus 9 greater or equal than 0  3 cubed.3 to the power of 2 straight x end exponent minus 84 straight space. straight space 3 to the power of straight x plus 9 greater or equal than 0  27 straight space. straight space 3 to the power of 2 straight x end exponent minus 84 straight space. straight space 3 to the power of straight x plus 9 greater or equal than 0  9 straight space. straight space 3 to the power of 2 straight x end exponent minus 28 straight space. straight space 3 to the power of straight x plus 3 greater or equal than 0    Misal space 3 to the power of straight x equals straight a space maka  9 straight a squared minus 28 straight a plus 3 greater or equal than 0  open parentheses 9 straight a minus 1 close parentheses open parentheses straight a minus 3 close parentheses greater or equal than 0 end style

begin mathsize 14px style straight a less or equal than 1 over 9 straight space logical or straight a greater or equal than 3  3 to the power of straight x less or equal than 3 to the power of negative 2 end exponent straight space logical or    3 to the power of straight x greater or equal than 3  Maka comma  straight x less or equal than negative 2 logical or straight x greater or equal than 1 end style

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