Which of the following equations has a root in common with x^2−4x+3=0 ? Choose the correct choice from the following choices.
A) x^2-4x-4=0  B) x^2-2x+1=0  C) x^2-x-1=0  D) x^2-10x-1=0  E) x^2+1=0
If we carefully look at the given equation we can arrange it in the following manner:   (x-1)(x-3) = 0   so the two roots are 1 and 3.   Now put 1 and 3 in given equations. The equation in which one of them gives value 0, that will be our answer.   (A) putting 1: we get -7; Putting 3 we get -7. Reject this option.   (B) putting 1: we get 0. This is the equation.   We are lucky. No need to check other options.   x^2-2x+1=0 is the answer.
<result>B</result>
Which of the following equations has a root in common with x^2−4x+3=0 ?