Find an explicit formula for an.
1, -1/4, 1/9, -1/16, 1/25….

1.3 and 1 1/3 are both closest to 1. hope this ; )

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 *_*