samiie20
samiie20 samiie20
  • 06-11-2019
  • Mathematics
contestada

How to factor x^2-2x-15

Respuesta :

jimrgrant1 jimrgrant1
  • 06-11-2019

Answer:

(x - 5)(x + 3)

Step-by-step explanation:

Given

x² - 2x - 15

Consider the factors of the constant term (- 15) which sum to give the coefficient of the x- term (- 2)

The factors are - 5 and + 3, since

- 5 × 3 = - 15 and - 5 + 3 = - 2, thus

(x - 5)(x + 3) ← in factored form

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