展开 1/((x+3)(x+2))

解答

展开

\frac{1}{( x + 3 ) ( x + 2 )}

\frac{1}{x ^{2} + 5 x + 6}

求解步骤

\frac{1}{( x + 3 ) ( x + 2 )}

乘开

(x + 3) (x + 2) : x^{2} + 5 x + 6

= \frac{1}{x ^{2} + 5 x + 6}

e x p an d (- 2 x^{2} y^{3})^{4}

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

e x p an d cos (θ) (tan (θ) + sec (θ)) d θ

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

e x p an d (- 2 = 5 i) \cdot (- 4 + 6 i)