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Evaluate 3x2−9 when x=−2
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24 votes
Evaluate 3x2−9
when x=−2

User Mukul Bansal
by
7.2k points

1 Answer

7 votes

Answer:

3

Explanation:

substitute x = - 2 into the expression

3x² - 9

= 3(- 2)² - 9

= 3(4) - 9

= 12 - 9

= 3

User Gabriel Rohden
by
8.4k points
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