-(2-1)^2

解答

- (2 - 1)^{2}

- 1

求解步骤

- (2 - 1)^{2}

遵循 PEMDAS 运算顺序

计算括号内的值

(2 - 1) : 1

2 - 1

2 - 1 = 1

= 1

= - 1^{2}

计算幂值

1^{2} : 1

1^{2}

1^{2} = 1

= 1

= - 1

[(+ 3) - (+ 5) + (+ 4)] \div [(+ 15) \div (- 3) - (- 7)]

[5 - (- 5)] + (- 5)

2 [3 \times 2 - (6 - 7 \times 5) + 2] - 1

4 (1^{2}) - 7 (1) + 5

3 \times [64 \div (13 - 5) - 4] \times 42 \div 6