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Pertanyaan

Batas nilai m agar persamaan kuadrat ( m + 3 ) x 2 + m x + 1 = 0 mempunyai akar-akar riil adalah....

Batas nilai m agar persamaan kuadrat mempunyai akar-akar riil adalah....

  1. 2 less or equal than m less or equal than 6

  2. negative 2 less or equal than m less than 6

  3. m less or equal than negative 2 space a t a u space m greater or equal than 6

  4. m less than negative 2 space a t a u space m greater than 6

  5. m less or equal than negative 6 space a t a u space m greater or equal than negative 2

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Y. Endah

Master Teacher

Mahasiswa/Alumni Institut Teknologi Bandung

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Pembahasan

M e m p u n y a i space a k a r space r e a l space rightwards double arrow space D greater or equal than 0  b squared minus 4 a c space greater or equal than 0  m squared minus 4 left parenthesis m plus 3 right parenthesis left parenthesis 1 right parenthesis greater or equal than 0  m squared minus 4 m minus 12 greater or equal than 0  open parentheses m minus 6 close parentheses open parentheses m plus 2 close parentheses greater or equal than 0

J a d i space H P equals left curly bracket x vertical line m less or equal than negative 2 space a t a u space m greater or equal than 6 comma space x element of R right curly bracket

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