We will denote the function as $f(x) = 2x^3 - 4x^2 + 6x$.
For $x = -1$, we have:
$$f(-1) = 2(-1)^3 - 4(-1)^2 + 6(-1) = -2 - 4 - 6 = -12.$$
For $x = 4$, we have:
$$f(4) = 2(4)^3 - 4(4)^2 + 6(4) = 2 \cdot 64 - 4 \cdot 16 + 24 = 128 - 64 + 24 = 88.$$
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