JEE Main & Advanced
AIEEE Paper (Held On 11 May 2011)
question_answer
Sachin and Rahul attempted to solve a quadratic equaiton. Sachin made a mistake in writing down the constant term and ended up in roots (4,3). Rahul made a mistake in writing down coefficient of x to get roots (3,2). The correct roots of equation are :
AIEEE Solved Paper (Held On 11 May 2011)
A) 6,1
B) 4,3
C) -6,-1
D) -4,-3
Correct Answer:
A
Solution :
Let the correct equation be \[a{{x}^{2}}+bx+c=0\] now sachin's equation \[\Rightarrow \] Rahul's equation\[\Rightarrow \] \[-\frac{b}{a}=7\] ??(i) \[\frac{c}{a}=6\] ??.(ii) from (i) and (ii) correct equation is \[{{x}^{2}}-7x+6=0\]roots are 6 and 1