展开 sqrt(-25)

解答

展开

- 25

5 i

求解步骤

- 25

使用根式运算法则:

- a = - 1 a

- 25 = - 1 25

= - 1 25

使用虚数运算法则:

- 1 = i

= 25 i

25 = 5

= 5 i

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