Graph the function f of x is equal to x cubed minus 3 x minus 2 Based on the graph, which value for x is a double root of this function?

The function factors as x³ − 3x − 2 = (x + 1)²(x − 2). Because (x + 1) is squared, x = −1 is a double root. Thus the correct choice is negative 1.

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