展开 1/2 pow(x,4)-pow(x+1,3)-3pow(x,2)

解答

展开

\frac{1}{2} p o w (x, 4) - p o w (x + 1, 3) - 3 p o w (x, 2)

\frac{1}{2} p o w (x, 4) - p o w x - 1 \cdot p o w, 3 - 3 p o w (x, 2)

求解步骤

\frac{1}{2} p o w (x, 4) - p o w (x + 1, 3) - 3 p o w (x, 2)

= \frac{1}{2} p o w (4, x) - p o w (x + 1 \cdot 3,) - 3 p o w (2, x)

乘开

- p o w (x + 1, 3) : - p o w x - 1 \cdot p o w, 3

= \frac{1}{2} p o w (x, 4) - p o w x - 1 \cdot p o w, 3 - 3 p o w (x, 2)

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