Give an example of a quadratic with complex roots. explain how you know it has complex roots.

2x^2 + x + 3=0 has only complex roots.

The determinant is 1-4*2*3 = -23

-23 (or any determinant) is the part under the square root sign,  If that determinant is negative, knowing you cannot take the square root of a negative number, we know the answers must be complex.

Steps in copying an angle are:  
first c ) open the compass; after that  b ) draw a ray with one endpoint; then a ) place compass on the vertex of the new angle; and finally: d )
answer:
the final step is: d ) draw a ray through the new vertex and the intersection point of the two arcs.