I really need so assistance​

Element 17 is chlorine it is a group 7 element(halogen) and belongs to period 3 of the periodic table

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 *_*