展开 sqrt(5)(sqrt(3)-12)

解答

展开

5 (3 - 12)

15 - 125

十进制

- 22.95983 \dots

求解步骤

5 (3 - 12)

使用分配律:

a (b - c) = ab - a c

5 (3 - 12) = 53 - 5 \cdot 12

= 53 - 5 \cdot 12

53 - 5 \cdot 12 = 15 - 125

= 15 - 125

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