Question: For each polynomial, find all roots of the function and simplify them as much as possible. Then sketch the complete graph, indicating the viewing window,


For each polynomial, find all roots of the function and simplify them as much as possible. Then sketch the complete graph, indicating the viewing window, the x-intercepts and the relative maximum and minimum.(a) f(x)=x³+2x²-3x-6(b) f(x)=2x³-7x²-3x+8(c) f(x)-x³-8x²+21x-20
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