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?? - 2013 Q3 A

​3.   
where a is a constant.

Given that (x – 3) is a factor of f(x),

(a) show that a = – 9 (2)

(b) factorise f(x) completely. (4)

​Given that 
​(c) find the values of y that satisfy g(y) = 0, giving your answers to 2 decimal places where appropriate. (3)

ANSWERS