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Popular >

2(-1)^2+8(-1)

Solution

2 (- 1)^{2} + 8 (- 1)

Solution

- 6

Solution steps

2 (- 1)^{2} + 8 (- 1)

Follow the PEMDAS order of operations

Calculate exponents

(- 1)^{2} : 1

(- 1)^{2}

Apply exponent rule:

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

if

n

is even

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

= 1

= 2 \cdot 1 + 8 (- 1)

Multiply and divide (left to right)

2 \cdot 1 : 2

2 \cdot 1

2 \cdot 1 = 2

= 2

= 2 + 8 (- 1)

Multiply and divide (left to right)

8 (- 1) : - 8

8 (- 1)

Apply rule

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

8 (- 1) = - 8 \cdot 1 = - 8

= - 8

= 2 - 8

Add and subtract (left to right)

2 - 8 : - 6

2 - 8

2 - 8 = - 6

= - 6

= - 6

Popular Examples

(7\times 2-12+152)-(12\times 2+12+152)

(7 \times 2 - 12 + 152) - (12 \times 2 + 12 + 152)

61-((55+44)+3^2)-633\div 3

61 - ((55 + 44) + 3^{2}) - 633 \div 3

2\times 5\times+9

2 \times 5 \times + 9

-9-9/8-1/3-9/64

- 9 - \frac{9}{8} - \frac{1}{3} - \frac{9}{64}

30\times (-40)\div 20\times (-10)

30 \times (- 40) \div 20 \times (- 10)

Frequently Asked Questions (FAQ)

What is 2(-1)^2+8(-1) ?
The solution to 2(-1)^2+8(-1) is -6