a2 - 4a + 3 = 0 হলে a এর মান কত?

A 3

B 1

C 2

D ক এবং খ

Solution

Correct Answer: Option D

a²-4a+3=0
বা,a²-3a-a+3=0
বা,a(a-3)(a-1)=0

অতএব,a-3=0
       বা,a=3

অথবা a-1=0
        a=1

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