簡約 3^2+(82)+4-(sqrt(9))(5)-7+2^3

解

簡約

3^{2} + (8 \cdot 2) + 4 - (9) (\cdot 5) - 7 + 2^{3}

15

解答ステップ

3^{2} + (8 \cdot 2) + 4 - (9) \cdot 5 - 7 + 2^{3}

規則を適用する:

(a) = a

(8 \cdot 2) = 8 \cdot 2

= 3^{2} + 8 \cdot 2 + 4 - 9 \cdot 5 - 7 + 2^{3}

数を引く:

4 - 7 = - 3

= 3^{2} + 8 \cdot 2 - 3 - 9 \cdot 5 + 2^{3}

3^{2} = 9

8 \cdot 2 = 16

9 \cdot 5 = 15

2^{3} = 8

= 9 + 16 - 3 - 15 + 8

数を足す:

9 + 16 - 3 - 15 + 8 = 15

= 15