展开 (x+3)/((x-5)(x+2))

解答

展开

\frac{x + 3}{( x - 5 ) ( x + 2 )}

\frac{x + 3}{x ^{2} - 3 x - 10}

求解步骤

\frac{x + 3}{( x - 5 ) ( x + 2 )}

乘开

(x - 5) (x + 2) : x^{2} - 3 x - 10

= \frac{x + 3}{x ^{2} - 3 x - 10}

e x p an d cos (2 t) - cos (2 t) U (t - π)

e x p an d (x - 1) d x

e x p an d \frac{125 ( 2 n + 3 ) ^{2} ( 2 n + 4 ) ^{2}}{4}

e x p an d (2 π - 45)^{2}

e x p an d U (t - 4) (2 - t^{2}) + 2 e^{- π t} + sin (3 t) - t^{3}