gabby1074 gabby1074
  • 25-07-2019
  • Mathematics
contestada

Factor completely x^2-3x-28

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Respuesta :

jimrgrant1 jimrgrant1
  • 25-07-2019

Answer:

(x - 7)(x + 4)

Step-by-step explanation:

Given

x² - 3x - 28

Consider the factors of the constant term ( - 28) which sum to give the coefficient of the x- term ( - 3)

The factors are - 7 and + 4, since

- 7 × 4 = - 28 and - 7 + 4 = - 3, hence

x² - 3x - 28 = (x - 7)(x + 4) ← in factored form

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