PLs help show all work covert to radical form and simplify if possible

The correct answer will be d. -4

Do you need with the x value for the minimum? its always between the two intercepts for a parabola

Provide an equation

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 *_*