展开 sqrt(2)(5+sqrt(3))

解答

展开

2 (5 + 3)

52 + 6

十进制

9.52055 \dots

求解步骤

2 (5 + 3)

使用分配律:

a (b + c) = ab + a c

2 (5 + 3) = 2 \cdot 5 + 23

= 2 \cdot 5 + 23

2 \cdot 5 + 23 = 52 + 6

= 52 + 6

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