s404847 s404847

04-04-2022
Mathematics

contestada

Evaluate 3x2−9
when x=−2

Respuesta :

jimrgrant1 jimrgrant1

04-04-2022

Answer:

3

Step-by-step explanation:

substitute x = - 2 into the expression

3x² - 9

= 3(- 2)² - 9

= 3(4) - 9

= 12 - 9

= 3

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