1. On the coordinate plane, plot and label these points: A=(2,1), B=(5,1), C=(7,2), D=(4,2) 2. What is the length of CD?
3. What kind of quadrilateral is ABCD?

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 *_*