Which of the following equations has a root in common with x^2−3x+2=0 ?  Pick
A) x^2-2x+1=0
B) x^2-2x-1=0
C) x^2-x+1=0
D) x^2-3x+3=0
E) x^2-7x=0
If we carefully look at the given equation we can arrange it in the following manner:   (x-1)(x-2)= 0   so the two roots are 1 and 2.   Now put 1 and 2 in given equations. The equation in which one of them gives value 0, that will be our answer.   (A) 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>A</result>
Which of the following equations has a root in common with x^2−3x+2=0 ?