x2 - 4x + 3 এবং x2 - 5x + 6 এর ল.সা.গু = কত?
A (x - 3)
B 1
C (x - 1)(x - 2)(x - 3)
D (x - 2)(x - 3)
Solution
Correct Answer: Option C
১ম রাশি = x2 - 4x + 3
= x2 - 3x - x + 3
= x(x - 3) - 1(x - 3)
= (x - 3)(x - 1)
২য় রশি = x2 - 5x + 6
= x2 - 2x - 3x + 6
= x(x - 2) - 3(x - 2)
= (x - 2)(x - 3)
নির্ণেয় ল.সা.গু = (x - 1)(x - 2)(x - 3)