簡約 10(5+sqrt(5))

解

簡約

10 (5 + 5)

50 + 105

十進法表記

72.36067 \dots

解答ステップ

10 (5 + 5)

分配法則を適用する:

a (b + c) = ab + a c

10 (5 + 5) = 10 \cdot 5 + 105

= 10 \cdot 5 + 105

数を乗じる:

10 \cdot 5 = 50

= 50 + 105

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