doryana doryana

26-02-2021
Mathematics

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Evaluate the algebraic expression x^2 - 20 for x = 7 and for x = 9

Respuesta :

Аноним Аноним

26-02-2021

Answer:

29

61

Step-by-step explanation:

x^2 - 20

x = 7 and 9

Evaluate

___________

We know the values of x, let's substitute them with the x in the problem :

(7)^2 - 20

49 - 20

29

(9)^2 - 20

81 - 20

61

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