Suppose a and b are points. how many lines contain both a and b?

One and only one line contains both A and B (assuming, that A and B do not overlap)

Point A and point B should both contain one line

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 *_*