Which of the following statements about parallelograms is not always true?
opposite sides are parallel.
opposite angles are congruent.
diagonals bisect each other.
diagonals are perpendicular.

The answer is

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 *_*