Question A3 A quadratic equation is defined as – 0.1x2 + 0.6x – 0.9 = 0.
Find the discriminant and hence state the number of real roots.
All working must be shown.

All of the following came out of china and were exchanged along the silk road, except a. papermaking b. block printing c. buddhism d. compasses select the best answer from the choices provided a b c d