展开 (4-x^2)dx

解答

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(4 - x^{2}) d x

4 d x - x^{2} d x

求解步骤

(4 - x^{2}) d x

使用分配律:

a (b - c) = ab - a c

a = d x, b = 4, c = x^{2}

= d x \cdot 4 - d x x^{2}

= 4 d x - x^{2} d x

e x p an d \frac{1}{( x ^{2} + 6 x + 5 ) ^{2}}

e x p an d (2 x - 5) (x + 1)

e x p an d \frac{( x + 3 ) ( x + 1 ) ( x - 1 )}{( x + 2 ) ( x - 4 )}

e x p an d - \frac{2 ( y - x )}{y + 2 x} (- 1, - 2)

s im pl i f y (\frac{x ^{2}}{12} - 6 x + 120) x