Evaluate square root of -8

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Algebra

$\sqrt{- 8}$

Rewrite $- 8$ as $- 1 (8)$ .

$\sqrt{- 1 (8)}$

Rewrite $\sqrt{- 1 (8)}$ as $\sqrt{- 1} \cdot \sqrt{8}$ .

$\sqrt{- 1} \cdot \sqrt{8}$

Rewrite $\sqrt{- 1}$ as $i$ .

$i \cdot \sqrt{8}$

Rewrite $8$ as $2^{2} \cdot 2$ .

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Factor $4$ out of $8$ .

$i \cdot \sqrt{4 (2)}$

Rewrite $4$ as $2^{2}$ .

$i \cdot \sqrt{2^{2} \cdot 2}$

Pull terms out from under the radical.

$i \cdot (2 \sqrt{2})$

Move $2$ to the left of $i$ .

$2 i \sqrt{2}$

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Name

Name	one billion five hundred seventy-two million seven hundred nineteen thousand nine hundred sixty

Interesting facts

1572719960 has 64 divisors, whose sum is 7279447968
The reverse of 1572719960 is 0699172751
Previous prime number is 7

Basic properties

Is Prime? no
Number parity even
Number length 10
Sum of Digits 47
Digital Root 2

Name

Name	one billion nine hundred six million two hundred eighty-four thousand nine hundred eighty-six

Interesting facts

1906284986 has 16 divisors, whose sum is 2895682560
The reverse of 1906284986 is 6894826091
Previous prime number is 127

Basic properties

Is Prime? no
Number parity even
Number length 10
Sum of Digits 53
Digital Root 8

Name

Name	seven hundred seventy million four hundred sixty-eight thousand six hundred eighty-eight

Interesting facts

770468688 has 64 divisors, whose sum is 3939904800
The reverse of 770468688 is 886864077
Previous prime number is 99

Basic properties

Is Prime? no
Number parity even
Number length 9
Sum of Digits 54
Digital Root 9

Evaluate (-2)^2

Find the Inverse Function f(x)=x^3-5

Factor 2x-4

Find the X and Y Intercepts y=x-6

Find the End Behavior 5x^8-2x^7-8x^6+1