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Which expressions represent purely real numbers and which expressions represent non-real complex numbers?
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-289
i9
√(-18)
4- 321² 2 √-49
3 +2i
Purely Real Number
Non-real Complex Number

Respuesta :

An expression is defined as a set of numbers, variables, and mathematical operations.

What is an Expression?

In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.

From the given expression the numbers can be classified as,

Real Numbers

  • -289
  • i⁹ = -1
  • 4-32i² = 36

Non-real / Complex Number

  • 3 + 2i
  • 2 - √-49 = 2 - 7i

Learn more about Expression:

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