What is -(-2+1)^2-4 ?

The solution to -(-2+1)^2-4 is -5

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-(-2+1)^2-4

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

- 5

Solution steps

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

Follow the PEMDAS order of operations

Calculate within parentheses

(- 2 + 1) : - 1

- 2 + 1

- 2 + 1 = - 1

= - 1

= - (- 1)^{2} - 4

Calculate exponents

(- 1)^{2} : 1

(- 1)^{2}

Apply exponent rule:

(- a)^{n} = a^{n},

n

is even

(- 1)^{2} = 1^{2} = 1

= 1

= - 1 - 4

Add and subtract (left to right)

- 1 - 4 : - 5

- 1 - 4

- 1 - 4 = - 5

= - 5

= - 5

\frac{8}{( 2 + 4 ) ^{3}}

7 - 2 \cdot [2 - 3 - 3 \cdot (2 + 8) - 2 + 13] - 4

(9 + 2) 3^{2}

- 5 (2) - 1

150000 \div 1500000 \times 100