展开 sqrt(5)(2+6pi)

解答

展开

5 (2 + 6 π)

25 + 65 π

十进制

46.62102 \dots

求解步骤

5 (2 + 6 π)

使用分配律:

a (b + c) = ab + a c

a = 5, b = 2, c = 6 π

= 5 \cdot 2 + 5 \cdot 6 π

= 25 + 65 π

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