For what values of a and a will the graph of f(x) = ax^2 + c have one x-intercept?
For any real value of a with a
=/ ,In the function will have one x-intercept when c=

(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.