化简 (3+2i)(2-i)-(1-i)(2-3i)

解答

化简

(3 + 2 i) (2 - i) - (1 - i) (2 - 3 i)

9 + 6 i

求解步骤

(3 + 2 i) (2 - i) - (1 - i) (2 - 3 i)

(3 + 2 i) (2 - i) = 8 + i

(1 - i) (2 - 3 i) = - 1 - 5 i

= 8 + i - (- 1 - 5 i)

展开

- (- 1 - 5 i) : 1 + 5 i

= 8 + i + 1 + 5 i

对同类项分组

= i + 5 i + 8 + 1

6 (2 x - 2) = 19 (x - 12)

5 x - 1 = 4 x

8 y - 3 = 17 - 2 y

f a c t or x^{5} - 5 x^{3} - 36 x

s im pl i f y ln (0.001)