Dr Lee’s Additional Mathematics Classes ( 91473612 or check out http://ascklee.org/) Page | 1 Solutions to Chow Wai Keung’s Discovering Additional Mathematics (Textbook) Note that the tables have been slightly modified to include more information. Class Activity 1: p. 4 1. Equation Remarks And So? Roots (a) 1 4 3 ()() implies that the equation has two real and distinct roots ( )( ) Roots: and (b) 2 () ()() implies that the equation has two real and distinct roots ( )( ) Roots: and (c) 1 9 () ()() implies that the equation has two real and equal roots ( )( ) Roots: and (d) 4 25 () ()() implies that the equation has two real and equal roots ( )( ) Roots: and (e) 1 5 7 ()() implies that the equation has no