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Popular >

-(-2)^2-4(-2)-5

Solution

- (- 2)^{2} - 4 (- 2) - 5

Solution

- 1

Solution steps

- (- 2)^{2} - 4 (- 2) - 5

Follow the PEMDAS order of operations

Calculate exponents

(- 2)^{2} : 4

(- 2)^{2}

Apply exponent rule:

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

if

n

is even

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

= 4

= - 4 - 4 (- 2) - 5

Multiply and divide (left to right)

4 (- 2) : - 8

4 (- 2)

Apply rule

a \cdot (- b) = - a \cdot b

4 (- 2) = - 4 \cdot 2 = - 8

= - 8

= - 4 - (- 8) - 5

Add and subtract (left to right)

- 4 - (- 8) - 5 : - 1

- 4 - (- 8) - 5

Apply rule

- (- a) = + a

- (- 8) = + 8

= - 4 + 8 - 5

- 4 + 8 = 4

= 4 - 5

4 - 5 = - 1

= - 1

= - 1

Popular Examples

-(-2)^2-4(-2)-7

- (- 2)^{2} - 4 (- 2) - 7

[(19-14)\div 5+(30-22)\div 4]*32\div (4\div 2-5)

[(19 - 14) \div 5 + (30 - 22) \div 4] \cdot 32 \div (4 \div 2 - 5)

6 \times 1 - 3

8^3+(-5)^2+4^1+4^0+5

8^{3} + (- 5)^{2} + 4^{1} + 4^{0} + 5

- 3 (2)^{2} + 6 (2) + 5

Frequently Asked Questions (FAQ)

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