Which of the following equations has a root in common with x^2−4x=0 ? Options:
A) x^2-4x+4=0  B) x^2-2x+1=0  C) x^2-3x+2=0  D) x^2-7x+6=0  E) x^2-9x=0
If we carefully look at the given equation we can arrange it in the following manner:   x(x-4) = 0   so the two roots are 0 and 4.   Now put 0 and 4 in given equations. The equation in which one of them gives value 0, that will be our answer.   (A) putting 0: we get 4; Putting 4 we get 4. Reject this option.   (B) putting 0: we get 1; Putting 4 we get 9. Reject this option.   (C) putting 0: we get 2; Putting 4 we get 2. Reject this option.   (D) putting 0: we get 6; Putting 4 we get -6. Reject this option.   (E) putting 0: we get 0. This is the equation.   x^2-9x=0 is the answer.
<result>E</result>
Which of the following equations has a root in common with x^2−4x=0 ?