Factor by grouping: x^3+2x^2−6x−12. Which of the following is one of the factors? A) (x^2−6x)
B) (x^2−6)
C) (x^2+2)
D) (x−2)

Answer to your question: a. the fundamental theorem of algebra tells you that the equation will have two complex roots since the degree of the polynomial is 2. the roots are ​ x=1±i7√2 .number of roots=degree of polynomialhere, degree of polynomial is 2 so number of roots will be 2.hope it *_*