X^3 + 3x^2 − x − 5 = 0
Chứng minh phương trình trên có 2 nghiệm âm và 1 nghiệm dương.

Ithink the answer is $2.10

Ithink ghe answer to this question is b just trying to others

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.