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1.
f(x)=x^2-5x+6 এবং,f(x)=0 হলে x=কত?
- A. 2,3
- B. 2,3
- C. 2,3
- D. 2,3
Answer: Option A
Explanation:
f(x) = x² - 5x + 6
এখন, f(x) = 0
∴ x² - 5x + 6 = 0
= > x² - 3x - 2x + 6 = 0
= > x(x - 3) - 2 (x - 3) = 0
= > (x - 3) (x - 2) = 0
∴ x = 2, 3
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