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1.Consider the function f(x)=40+16 x-2 x^{2} (a) Write f (x) in factorised form. (b) Write f (x) in standard form, i.e., in the form f(x) = a(x – h)² +
k. (c) Sketch a graph of f(x). Label the intercepts and the coordinate of the vertex.
Fig: 1
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Fig: 4
Fig: 5
