Answer:
B
Step-by-step explanation:
In my opinion factoring is the better approach here
Given
x² + 6x - 7 = 0 ← in standard form
Consider the factors of the constant term (- 7) which sum to give the coefficient of the x- term (+ 6)
The factors are + 7 and - 1, since
7 × - 1 = - 7 and + 7 - 1 = 6, hence
(x + 7)(x - 1) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 7 = 0 ⇒ x = - 7
x - 1 = 0 ⇒ x = 1
