As arousal increases, so does quality of performance--up to a point. There appears to be an optimal level of arousal, after which more arousal leads to poorer performance. This describes a relationship.

What the heck i didn’t know

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 *_*