展开 C(1,-1)

解答

展开

C (1, - 1)

1 \cdot C, - 1 \cdot C

求解步骤

C (1, - 1)

= (1, - 1) C

使用分配律:

a (b - c) = ab - a c

a = C, b = 1,, c = 1

= C \cdot 1, - C \cdot 1

= 1 \cdot C, - 1 \cdot C

e x p an d 2 (25 π - 50)

s im pl i f y (a + ib 5)^{2}

e x p an d s (x) 9000 (1 - e^{- 0.002 x})

e x p an d \frac{5}{4} (20 x + 12 = - 35)

s im pl i f y n \cdot (4 n + 1 + 2 n)