The sum of two numbers is 20. Their difference is 4. a. Write a system of equations that describe this situation
b. Solve by elimination to find the two numbers​

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 *_*