Given the quadratic function f⁡(x)=2⁢(x+1)⁢(x−3) , what are the x -intercepts of the function?

The x-intercepts occur where f(x) = 0. Since f(x) = 2(x + 1)(x − 3), set each factor equal to zero: x + 1 = 0 gives x = −1, and x − 3 = 0 gives x = 3. The x-intercepts are negative 1 and 3, which is choice B.

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