Simplify 1/(2-i)

Simplify 1/(2-i)
Multiply the numerator and denominator of by the conjugate of to make the denominator real.
Multiply.
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Combine.
Multiply by .
Simplify the denominator.
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Expand using the FOIL Method.
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Apply the distributive property.
Apply the distributive property.
Apply the distributive property.
Simplify.
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Multiply by .
Multiply by .
Raise to the power of .
Raise to the power of .
Use the power rule to combine exponents.
Add and .
Subtract from .
Add and .
Simplify each term.
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Rewrite as .
Multiply by .
Add and .
Split the fraction into two fractions.
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Name

Name one billion five hundred eighty-nine million nine hundred thirty-nine thousand five hundred twenty-eight

Interesting facts

  • 1589939528 has 32 divisors, whose sum is 5368642524
  • The reverse of 1589939528 is 8259399851
  • Previous prime number is 2113

Basic properties

  • Is Prime? no
  • Number parity even
  • Number length 10
  • Sum of Digits 59
  • Digital Root 5

Name

Name two hundred nine million four hundred ninety-six thousand six hundred seventy-six

Interesting facts

  • 209496676 has 16 divisors, whose sum is 471497796
  • The reverse of 209496676 is 676694902
  • Previous prime number is 7237

Basic properties

  • Is Prime? no
  • Number parity even
  • Number length 9
  • Sum of Digits 49
  • Digital Root 4

Name

Name one billion one hundred seventy-four million two hundred ninety-one thousand five hundred sixty-one

Interesting facts

  • 1174291561 has 4 divisors, whose sum is 1236096400
  • The reverse of 1174291561 is 1651924711
  • Previous prime number is 19

Basic properties

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