Respuesta :

Answer:

D

Step-by-step explanation:

Given

n² - n - 42

Consider the factors of the constant term (- 42) which sum to give the coefficient of the n- term (- 1)

The factors are - 7 and + 6 , since

- 7 × + 6 = - 42 and - 7 + 6 = - 1 , then

n² - n - 42 = (n - 7)(n + 6) ← in factored form

ItzStarzMe

Solution :-

Given,

  • n^2 - n - 42

We need to factorise it.

So let's start !!

Two factors are -7 and 6.

Therefore,

  • n^2 - 7n + 6n - 42
  • n (n - 7) + 6 (n - 7)
  • (n - 7) (n + 6)

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