展开 (6x^2-2)/((x^2+1)^3)

解答

展开

\frac{6 x ^{2} - 2}{( x ^{2} + 1 ) ^{3}}

\frac{6 x ^{2} - 2}{x ^{6} + 3 x ^{4} + 3 x ^{2} + 1}

求解步骤

\frac{6 x ^{2} - 2}{( x ^{2} + 1 ) ^{3}}

(x^{2} + 1)^{3} = x^{6} + 3 x^{4} + 3 x^{2} + 1

= \frac{6 x ^{2} - 2}{x ^{6} + 3 x ^{4} + 3 x ^{2} + 1}

e x p an d cos (2) (θ - \frac{π}{2})

e x p an d \frac{e ^{- s}}{( s - 3 ) ( s - 2 ) s}

e x p an d (10 - x) \cdot x

e x p an d 11750 (224 π^{2} + (188 π \cdot k + 1658 π) - 2091)

s im pl i f y 7 (6 - 5)