展开 sqrt(3)(sqrt(2)+sqrt(10))

解答

展开

3 (2 + 10)

6 + 30

十进制

7.92671 \dots

求解步骤

3 (2 + 10)

使用分配律:

a (b + c) = ab + a c

3 (2 + 10) = 32 + 310

= 32 + 310

32 = 6

310 = 30

= 6 + 30

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