joesep joesep
  • 12-06-2019
  • Mathematics
contestada

Which shows the factored form of x2-12x-45?

Respuesta :

jimrgrant1 jimrgrant1
  • 12-06-2019

Answer:

(x - 15)(x + 3)

Step-by-step explanation:

Consider the factors of the constant term (- 45) which sum to give the coefficient of the x- term (- 12)

The factors are - 15 and + 3, since

- 15 × 3 = - 45 and - 15 + 3 = - 12, hence

x² - 12x - 45 = (x - 15)(x + 3)

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