Phyllis invested 45000
dollars, a portion earning a simple interest rate of
4
percent per year and the rest earning a rate of
6
percent per year. After one year the total interest earned on these investments was
2200
dollars. How much money did she invest at each rate?

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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 *_*