# Evaluate (-20+ square root of -75)/40

Evaluate (-20+ square root of -75)/40
Pull out imaginary unit .
Rewrite as .
Rewrite as .
Rewrite as .
Simplify the numerator.
Rewrite as .
Factor out of .
Rewrite as .
Pull terms out from under the radical.
Move to the left of .
Simplify terms.
Cancel the common factor of and .
Factor out of .
Factor out of .
Factor out of .
Cancel the common factors.
Factor out of .
Cancel the common factor.
Rewrite the expression.
Rewrite as .
Factor out of .
Factor out of .
Move the negative in front of the fraction.
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### Name

Name two billion one hundred million eighty-three thousand eight hundred eighty-seven

### Interesting facts

• 2100083887 has 4 divisors, whose sum is 2291000616
• The reverse of 2100083887 is 7883800012
• Previous prime number is 11

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 10
• Sum of Digits 37
• Digital Root 1

### Name

Name six hundred seven million eight hundred sixty-four thousand nine hundred eighty-two

### Interesting facts

• 607864982 has 8 divisors, whose sum is 911921976
• The reverse of 607864982 is 289468706
• Previous prime number is 32003

### Basic properties

• Is Prime? no
• Number parity even
• Number length 9
• Sum of Digits 50
• Digital Root 5

### Name

Name two hundred million four hundred seven thousand one hundred forty-two

### Interesting facts

• 200407142 has 32 divisors, whose sum is 340381440
• The reverse of 200407142 is 241704002
• Previous prime number is 139

### Basic properties

• Is Prime? no
• Number parity even
• Number length 9
• Sum of Digits 20
• Digital Root 2