f(x)= x2-5x+6 এবং f(x)=0 হলে x = ?

A 2, 3

B -5, 1

C -2, 3

D 1,-5

Solution

Correct Answer: Option A

f(x) = x2-5x+6
আবার,
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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