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lawyer [7]
3 years ago
9

QUESTION 7

Mathematics
1 answer:
adell [148]3 years ago
8 0

Answer:

  • The product of an even number and an oven number
  • The product of an odd number and an odd number
  • The product of a perfect cube and a perfect cube

Step-by-step explanation:

The product of two even numbers will have at least two factors of 2, so will be even: <em>even numbers are closed under multiplication</em>.

The product of two odd numbers will be an even number plus 1, so will be odd: <em>odd numbers are closed under multiplication</em>.

The product of two cubes will be the cube of the product of their cube roots: <em>cubes are closed under multiplication</em>.

__

The product of two negative numbers will be positive, so <em>the set of negative numbers is </em><em><u>not closed</u></em><em> under multiplication</em>.

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We want to evaluate [11.5-(2.5*3)]^2

Let us evaluate within the parenthesis first:

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We again subtract within the bracket to obtain:

[11.5-(2.5*3)]^2=[4]^2

This finally gives us:

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