展开 (x+2)/((x-4)(x-2))

解答

展开

\frac{x + 2}{( x - 4 ) ( x - 2 )}

\frac{x + 2}{x ^{2} - 6 x + 8}

求解步骤

\frac{x + 2}{( x - 4 ) ( x - 2 )}

乘开

(x - 4) (x - 2) : x^{2} - 6 x + 8

= \frac{x + 2}{x ^{2} - 6 x + 8}

e x p an d \frac{8640 e ^{- 0.96 t}}{( 1 + 3 e ^{- 0.96 t} ) ^{2}}

s im pl i f y c (1 - \frac{u ^{2}}{x ^{2}})

e x p an d \frac{1}{\frac{1}{\frac{1}{r _{1}} + \frac{1}{r _{2}}} + \frac{1}{r _{π}}}

e x p an d \frac{4 x ^{3} + 20 x ^{2} + 32 x + 13}{x ^{2} ( x ^{2} + 6 x + 13 )}

e x p an d \frac{( - \frac{6}{5} x ^{3} y ^{2} )}{( \frac{3}{5} x ^{2} y ^{2} )}