What is (-2)^3-2(-2)+1 ?

The solution to (-2)^3-2(-2)+1 is -3

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

(-2)^3-2(-2)+1

(- 2)^{3} - 2 (- 2) + 1

- 3

Solution steps

(- 2)^{3} - 2 (- 2) + 1

Follow the PEMDAS order of operations

Calculate exponents

(- 2)^{3} : - 8

(- 2)^{3}

Apply exponent rule:

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

n

is odd

(- 2)^{3} = - 2^{3} = - 8

= - 8

= - 8 - 2 (- 2) + 1

Multiply and divide (left to right)

2 (- 2) : - 4

2 (- 2)

Apply rule

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

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

= - 4

= - 8 - (- 4) + 1

Add and subtract (left to right)

- 8 - (- 4) + 1 : - 3

- 8 - (- 4) + 1

Apply rule

- (- a) = + a

- (- 4) = + 4

= - 8 + 4 + 1

- 8 + 4 = - 4

= - 4 + 1

- 4 + 1 = - 3

= - 3

= - 3

3 + 0^{2}

- 7 (- 2)^{2} + 5 (- 2) + 9

- 670 + 33 (44)

58 - 4 + (64 - 26) + (4 \times 3 + 6)

3 2^{2} + 6 3^{2} + 7 9^{2}