In quadrilateral ABCD, sides AB and DC have equal length and are parallel to each other. Point P is the intersection of the diagonals AC and BD. How many pairs of congruent triangles are in the figure?

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 *_*