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Answer :
Final answer:
The value of the function f(x) = 3x² + 2x - 8 when x is -2 is 0.
Explanation:
The question asks for the value of the function f(x) = 3x² + 2x - 8 when x is -2. To find this, we substitute -2 in the equation in place of x. Hence, f(-2) = 3(-2)² + 2(-2) -8 = 3*4 - 4 - 8 = 12 - 4 - 8 = 0. Therefore, the correct answer is B. 0.
or
To find f(-2), substitute -2 for x in the function f(x) = 3x² + 2x - 8:
f(-2) = 3(-2)² + 2(-2) - 8
= 3(4) - 4 - 8
= 12 - 12
= 0
Therefore, f(-2) = 0, which corresponds to option B.
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Answer:
f(-2) = 0
Step-by-step explanation:
f(x) = 3x² + 2x - 8,
Let x = -2
f(-2) = 3(-2)² + 2(-2) - 8
= 3(4) -4-8
=12-4-8
=0
