যদি f(x) = x3 + 9x2 - 3x - 6 হয়, তবে f(- 2) = কত?
Solution
Correct Answer: Option A
দেওয়া আছে, f(x) = x3 + 9x2 - 3x - 6
এখন,
f(- 2) = (- 2)3 + 9(- 2)2 - 3. (- 2) -6
= - 8 + 36 + 6 - 6
= 28
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