. A quadratic equation with roots -3 and 5 is
A.x2-15=0 B. x2-8x-15=0 C.x2+8x-15=0 D. x2+2x-15=0 E. x2-2x-15=0
- A quadratic equation with solution set {1/3,1/4} is
A.12x2=7x+1 B.12x2=7x-1 C.12x2=x+1 D.12x2=x-1 E.12x2=1-x
- The solution set of the system of equation x-y=3, x2-y2=21 is
A.{(2,5)} B.{(5,2)} C. {5,2} D.{(2,5),(5,2)} E. None of these
14.The solution set of the system of equation x-y=0,x2+y2=8 is
Define the following terms. (4-marks) (i) The molecular formula of a compound (ii) Relative atomic mass
(ii) Giant structure (iv) Symbol
VI. (a)Name the following statements
