展开 sqrt((x+1)(x-1)(x+2)x+1)

解答

展开

(x + 1) (x - 1) (x + 2) x + 1

x^{4} + 2 x^{3} - x^{2} - 2 x + 1

求解步骤

(x + 1) (x - 1) (x + 2) x + 1

乘开

(x + 1) (x - 1) (x + 2) x + 1 : x^{4} + 2 x^{3} - x^{2} - 2 x + 1

= x^{4} + 2 x^{3} - x^{2} - 2 x + 1

e x p an d A (2, - 7)

e x p an d \frac{8}{( x - 1 ) ^{3}}

\frac{d}{d θ} ((r (θ)) (sin (θ) + r (θ) cos (θ)))

e x p an d \frac{( p - 1 )}{( p ^{(2)} ( p ^{(2)} - 2 p + 5 ) )}

\frac{d}{d y} ((x (y)) (y^{2} + 2 y))