camillxa camillxa

05-04-2020
Mathematics

contestada

Evaluate 2x(second power)-1 when x = 3.
А. 35
В. 5
C. 25
D. 17

Respuesta :

igoroleshko156 igoroleshko156

05-04-2020

Answer:

Option D, 17

Step-by-step explanation:

Step 1: Set x to 3

[tex]2x^2 - 1[/tex]

[tex]2(3)^2 - 1[/tex]

[tex]2(9) - 1[/tex]

[tex]18 - 1[/tex]

[tex]17[/tex]

Answer: Option D, 17

Answer Link

abiolatolu90 abiolatolu90

05-04-2020

Answer:

The answer is 17

Step-by-step explanation:

2x² - 1

When x = 3

2(3²) - 1

2*9 - 1

18 - 1

= 17

Answer Link

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