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21. The sum of a number and five.
22. A certain number decreased by two.
23. Five times a certain number increased by ten.
24. Twice a number is four.
25. A number raised to the second power.










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Sagot :

EXPRESSIONS

21. The sum of a number and five.

  • x + 5

22. A certain number decreased by two.

  • x - 2

23. Five times a certain number increased by ten.

  • 5x + 10

24. Twice a number is four.

  • 2x = 4

25. A number raised to the second power.

  • x²

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