PLZZ HELP ASAP DUE IN AN HOUR 15 POINTS

In ○ D shown below,
€(measure) ADC = €(measure) BDC. Find the indicated measure ​

Subtracting is the opposite of adding

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 *_*