展开-(48x)/((x^2-4)^2)

解答

展开

- \frac{48 x}{( x ^{2} - 4 ) ^{2}}

- \frac{48 x}{x ^{4} - 8 x ^{2} + 16}

求解步骤

- \frac{48 x}{( x ^{2} - 4 ) ^{2}}

(x^{2} - 4)^{2} = x^{4} - 8 x^{2} + 16

= - \frac{48 x}{x ^{4} - 8 x ^{2} + 16}

s im pl i f y (x + 3) (x - 3) (x - 4)

e x p an d csc (x) (csc (x) + sin (x)) - c t an x (c t an x - tan (x))

e x p an d 5 x^{\frac{2}{3}} (8 x - 4 x^{\frac{1}{4}})

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e x p an d (3 (t + 1), - 6 (t - 1)) \cdot (- 4 (t + 1), 2 (t - 1))