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Akar-akar persamaan kuadratadalah dan . Persamaan ...

Akar-akar persamaan kuadratspace straight x squared space plus 2 straight x plus 5 equals 0 spaceadalah alpha dan beta. Persamaan kuadrat baru  yang akar-akarnya left parenthesis alpha minus 1 right parenthesis dan left parenthesis beta minus 1 right parenthesis adalah...

  1. x squared space plus 8 x plus 4 equals 0

  2. x squared space plus 4 x plus 8 equals 0

  3. x squared space minus 4 x plus 8 equals 0

  4. x squared space plus 4 x minus 8 equals 0

  5. x squared space minus 4 x minus 8 equals 0

Jawaban:

Akar-akar space straight x squared space plus 2 straight x plus 5 equals 0 spaceadalah alpha dan beta. Persamaan kuadrat baru:

straight a left parenthesis straight x space plus space straight m right parenthesis squared space plus straight b left parenthesis straight x plus straight m right parenthesis plus straight c equals straight O  left parenthesis straight x space plus space 1 right parenthesis squared space plus 2 left parenthesis straight x plus 1 right parenthesis plus 5 equals 0  straight x squared space plus 2 straight x plus 1 plus 2 straight x plus 2 plus 5 equals 0  straight x to the power of 2 space end exponent plus 4 straight x plus 8 equals 0

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