展开-sqrt(5)(2-sqrt(3))

解答

展开

- 5 (2 - 3)

- 25 + 15

求解步骤

- 5 (2 - 3)

使用分配律:

a (b - c) = ab - a c

- 5 (2 - 3) = - 5 \cdot 2 - (- 5) 3

= - 5 \cdot 2 - (- 5) 3

- 5 \cdot 2 - (- 5) 3 = - 25 + 15

= - 25 + 15

(- 3 + 5 i, - 3 + 3 i, 10 - 3 i) \cdot (- 3 - 2 i, - 4 - 3 i, 4 + 2 i)

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

\frac{1}{x ^{\frac{3}{4}} ( x + 1 - x )}

3 (x - 2)^{2}

(8 x y^{3} + 1) \cdot (18 sin^{8} (t) cos (t))