For this question, I keep getting it wrong because my most used strategy is choosing numbers. When I chose three different cases of numbers (positive, zero and negative), it always gave me the answer C.
I saw the solution and realized that I had to actually solve it to get the answer.
On the real test, how would I be able to differentiate whether I can plug in numbers or if I have to solve algebraically? Or do I have to do both to be safe that I’m getting the right answer?
P.S The other similar questions like this worked with the choosing numbers strategy so that’s why I used it for this question as well.