Asap ! select the correct answer. which equation cannot be solved by factoring? a. x2 + 5x − 4 = 0 b. x2 + 6x + 9 = 0 c. x2 + 3x − 4 = 0 d. x2 − x − 6 = 0

Step-by-step explanation:

We have four equations here.  Let's actually solve them, using factoring if possible and some other method if factoring is not possible.

A)  x^2 + 5x + 4 factors into (x + 1)(x + 4), but x^2 + 5x - 4 does not.

B)  x^2 + 6x + 9 factors into (x + 3)^2.

C) x^2 + 3x - 4 factors into (x + 4)(x - 1).

D) x^2 - x - 6 factors into (x - 3)(x + 2)

x^2 + 5x - 4 = 0 can be solved, but not by factoring.

answer: i'm not sure

step-by-step explanation: