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If (a^2-4a+3)x^2+(a^2-2a+1)x+(a^2-a)=0  is an identity in x, then the value of a are

 

Option: 1

0,1,3


Option: 2

1


Option: 3

1,0


Option: 4

None of these


Answers (1)

best_answer

For this to be an identity a^2-4a+3=0\Rightarrow (a-1)(a-3)=0\Rightarrow a=3

and a^2-2a+1=0\Rightarrow (a-1)^2=0\Rightarrow a=1

and a^2-a=0\Rightarrow a(a-1)=0\Rightarrow a=0,1

So for a=1, all are simultaneously zero so a = 1.

 

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chirag

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