x2 - 3x, x2 - 9, x2 - 4x + 3 এর গ.সা.গু কত?

A (x - 3)

B (x - 1)(x - 3) 

C x(x - 3)   

D 1

Solution

Correct Answer: Option A

১ম রাশি = x2 - 3x
              = x(x - 3)
২য় রাশি = x2 - 9
              = x2 - 32
              = (x + 3)(x - 3)
               
৩য় রাশি = x2 - 4x + 3
              =x2 - 3x - x + 3
              = x(x - 3) - 1(x - 3)
              = (x - 3) (x - 1)

নির্ণেয় গ.সা.গু = (x - 3)

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