2x
2
- 3(3x+7) for x = -2
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Answer:
ANSWER WILL BE 5
Step-by-step explanation:
2x ² - 3 (3x + 7) for x = -2
FIRST WE HAVE TO SIMPLIFY THE EQUATION,
2x ² - 3 (3x + 7)
= 2x ² - 9x - 21
AFTER SIMPLIFICATION WE HAVE TO PUT THE VALUE OF x
AS GIVEN, x = -2
2(-2) ² - 9(-2) - 21
= 2(4) + 18 - 21
= 8 - 3
= 5
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