展开 (4-c^2(3+sqrt(c^2+5)))/(8+c^2)

解答

展开

\frac{4 - c ^{2} ( 3 + c ^{2} + 5 )}{8 + c ^{2}}

\frac{4 - 3 c ^{2} - c ^{2} c ^{2} + 5}{8 + c ^{2}}

求解步骤

\frac{4 - c ^{2} ( 3 + c ^{2} + 5 )}{8 + c ^{2}}

乘开

4 - c^{2} (3 + c^{2} + 5) : 4 - 3 c^{2} - c^{2} c^{2} + 5

= \frac{4 - 3 c ^{2} - c ^{2} c ^{2} + 5}{8 + c ^{2}}

e x p an d \frac{( n \cdot ( n - 1 ) )}{2}

e x p an d c_{2} (e^{- 5 x} - 5 e^{- 5 x} x)

e x p an d \frac{( x + 3 ) ( x + 4 )}{( x + 5 ) ( x + 2 )}

e x p an d d w (x, y, z) (w (x, y, z) = x^{6} y z^{15} + sin (yz))

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