展开 (ab(a^4+b^4))/(a^6+b^6)

解答

展开

\frac{ab ( a ^{4} + b ^{4} )}{a ^{6} + b ^{6}}

\frac{a ^{5} b + a b ^{5}}{a ^{6} + b ^{6}}

求解步骤

\frac{ab ( a ^{4} + b ^{4} )}{a ^{6} + b ^{6}}

乘开

ab (a^{4} + b^{4}) : a^{5} b + a b^{5}

= \frac{a ^{5} b + a b ^{5}}{a ^{6} + b ^{6}}

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

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

e x p an d (2) (3 x - 2 y = 9)

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

e x p an d \frac{( 4 x ^{2} + 6 x )}{( x ^{2} + 1 ) ( x ^{2} + 4 )}