展开 (1-x)/((2-x)^2)

解答

展开

\frac{1 - x}{( 2 - x ) ^{2}}

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

求解步骤

\frac{1 - x}{( 2 - x ) ^{2}}

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

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

e x p an d \frac{x ^{2} ( 9 - x ^{2} )}{( 3 - x ^{2} ) ^{2}}

e x p an d a cos (ω t - k x) + a cos (ω t - k (x + δ x))

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

e x p an d \frac{k ( s + 1 )}{s ^{2} ( s + 10 ) ( s + 100 )}

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