展开 ((x+1)(x+2))/(x-2)

解答

展开

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

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

求解步骤

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

乘开

(x + 1) (x + 2) : x^{2} + 3 x + 2

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

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

e x p an d 10 (1 + 499 e^{- 1.78 t})

e x p an d cot (4 x) (sin (x) + sin (4 x) + sin (7 x))

s im pl i f y (x^{2} + 2 x y + y^{2}) (sin (x + y))

e x p an d e^{\frac{b}{( m + b y ) ( - b y - m )}}