化简 (x+2-sqrt(3))(x+2+sqrt(3))(x+6)

解答

化简

(x + 2 - 3) (x + 2 + 3) (x + 6)

(x^{2} + 4 x + 1) (x + 6)

求解步骤

(x + 2 - 3) (x + 2 + 3) (x + 6)

打开括号

= (xx + x \cdot 2 + x 3 + 2 x + 2 \cdot 2 + 23 - 3 x - 3 \cdot 2 - 33) (x + 6)

化简

xx + x \cdot 2 + x 3 + 2 x + 2 \cdot 2 + 23 - 3 x - 3 \cdot 2 - 33 : x^{2} + 4 x + 1

= (x^{2} + 4 x + 1) (x + 6)

e x p an d (5 x - x^{2}, t - (1 - x)^{2}, 1 - t - (5 x)^{2}) \cdot (5, 1, - 1)

e x p an d y (6, - 6) (20, - 20)

e x p an d \frac{d x}{d} (x = 3 cos (y) - sin (y) y_{2})

s im pl i f y (\frac{8 u}{5} + \frac{3 v ^{2}}{8}) (\frac{8 u}{5} - \frac{3 v ^{2}}{8})

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